## Threat model
When `actions/checkout` runs without `persist-credentials: false`,
the short-lived `GITHUB_TOKEN` injected at job start gets written
into the workspace's `.git/config` so subsequent Git operations
in the same job (push, fetch, etc.) can use it transparently.
Failure mode if a downstream step packages the workspace:
1. Step T fetches the repo via `actions/checkout` (token in
`.git/config`).
2. Step T+N packages the workspace -- or `logs/`, or a `dist/`
dir that lives inside the workspace -- via
`actions/upload-artifact`. The hidden `.git/` folder rides
along.
3. While the workflow is still running, the uploaded zip is
immediately downloadable via the GitHub UI / API. On a
PUBLIC repo, any logged-in GitHub user can download it.
4. The attacker extracts the live `GITHUB_TOKEN` from
`.git/config` and uses it to push code, modify branches,
comment on / close PRs, etc., before the token expires at
end-of-workflow (typically 1-6 hours).
This is a moderate-risk class because our long-running workflows
(Studio inference smoke, full Tauri build, MLX install on macOS)
keep the token alive for 30+ minutes -- plenty of window.
## What changes
Adds `with: persist-credentials: false` to all 51
`actions/checkout` call sites across 23 workflows. None of our
workflows actually use the persisted credentials -- the only
push-back operations are `gh release create / upload` in
release-desktop.yml, and those go through `${{ secrets.GITHUB_TOKEN }}`
explicitly (NOT via the persisted .git/config token).
So the sweep is universal -- no exceptions, no broken push-paths,
no required follow-up.
## Verification
- 51 checkout calls / 51 persist-credentials lines (one-to-one).
- All 24 workflow YAMLs still parse cleanly under PyYAML.
- No push-back-via-persisted-creds call site exists -- grepped
the workflow tree for `git push`, `git remote update`, etc.
Zero matches outside intentional `gh release ...` calls that
explicitly forward `${{ secrets.GITHUB_TOKEN }}`.
## Companion PR
unslothai/unsloth-zoo PR #637 (the greenfield CI mirror) gets the
same sweep on its 9 checkout sites in commit 1e6c0b0. Filed there
rather than as a separate PR to keep the related changes
together.
* scripts/scan_*: add Mini Shai-Hulud May-12 IOC strings and pin-blocklists
Append the May-12 2026 wave indicators (git-tanstack.com, transformers.pyz,
/tmp/transformers.pyz, "With Love TeamPCP", "We've been online over 2 hours")
to all three scanner IOC tables, add BLOCKED_NPM_VERSIONS (42 TanStack pkgs,
4 opensearch versions, 3 squawk pkgs) in scan_npm_packages.py and
lockfile_supply_chain_audit.py (kept byte-identical), add BLOCKED_PYPI_VERSIONS
(guardrails-ai 0.10.1, mistralai 2.4.6, lightning 2.6.2/2.6.3) plus
RE_MAY12_IOC wiring across check_py_file/check_shell_file/check_workflow_file
in scan_packages.py. The npm orchestrator and the lockfile auditor now
short-circuit on a blocked entry before fetching the tarball, and the
PyPI download pipeline drops blocked specs before pip download is invoked.
* tests/security: regression suite for supply-chain scanners
Adds offline fixture corpus and pytest coverage for scan_npm_packages,
scan_packages, and lockfile_supply_chain_audit so future IOC-table
drift surfaces at PR time. Pytest scope narrowed to tests/security so
GPU smoke tests are not picked up by default.
* ci(security-audit): drop continue-on-error on pip-scan and npm-scan jobs
Promote three harden-runner blocks to egress-policy: block with per-job allowlists.
Add tests-security job running pytest tests/security as a hard gate.
* [pre-commit.ci] auto fixes from pre-commit.com hooks
for more information, see https://pre-commit.ci
* scripts: harden third-party downloads, pip resolver pins, atomic writes
Pins uv installer and mlx_vlm qwen3_5 patches by commit SHA + SHA-256
checksum, scrubs PIP_* env vars and forces --index-url + --only-binary
on pip download, applies tarbomb caps to scan_packages archive walks,
and converts non-atomic config writes (kwargs spacer, studio stamper,
notebook validator, scan_packages req-file fixer) to mkstemp+os.replace.
Also adds host allowlist to notebook_to_python downloader, threads an
--allow-shell flag through its shell=True emission with reviewer warning
comments, locks both MLX installer scripts to set -euo pipefail, and
extends CODEOWNERS so colab snapshot data files require notebook-owner
review.
* ci(workflows): harden release-desktop / smoke / notebooks workflows
Pin dtolnay/rust-toolchain to a 40-char SHA, scope release-desktop permissions to read at workflow level with job-level write only on the build job, append --ignore-scripts to every npm ci / npm install in studio-frontend-ci / wheel-smoke / studio-tauri-smoke / release-desktop, validate client_payload.ref shape via an env-var-isolated regex on every notebooks-ci job, and add step-security/harden-runner in audit mode as the first step of release-desktop and mlx-ci.
* scripts: promote silent scanner failures to non-zero exit codes
scan_packages now returns 2 on pip-download failure and emits a CRITICAL archive_corrupted finding on truncated wheels/sdists.
notebook_to_python exits 1 on per-notebook failures; notebook_validator wraps the stash/pop in try/finally; lockfile audit rejects bare UNSLOTH_LOCKFILE_AUDIT_SKIP=1 with a loud GitHub Actions warning.
* Add npm cooldown + new-install-script gate + Dependabot cooldown
Pins min-release-age=7 (npm 11.10+) in repo-root and studio/frontend
.npmrc, adds scripts/check_new_install_scripts.py to fail PRs that
add a postinstall dep, ships a new security-audit job for npm audit
signatures plus the diff, and extends .github/dependabot.yml with
cooldown stanzas. Pin @tanstack/react-router to 1.169.9 per GHSA-
g7cv-rxg3-hmpx; lockfile regen deferred until that release lands on
npm. tests/security gains 4 new tests; full suite 26/26 green.
* [pre-commit.ci] auto fixes from pre-commit.com hooks
for more information, see https://pre-commit.ci
* ci(security): fix tanstack pin, exec bits, expand IOC tables to @uipath/@squawk full
- Revert --ignore-scripts on Studio install workflows: vite build needs
esbuild's native postinstall (per PR #5392 rationale). Keep
--ignore-scripts on security-audit.yml's standalone npm audit job.
- Pin @tanstack/react-router to the actual published 1.169.2 (was a
forward-looking 1.169.9 that does not exist on npm; broke npm ci).
- Drop redundant repo-root .npmrc; studio/frontend/.npmrc covers the
only npm project today (root cooldown re-instate via dependabot.yml).
- Restore exec bits on 7 files my filesystem stripped during cherry-pick.
- Expand BLOCKED_NPM_VERSIONS with full safedep.io + Aikido enumeration:
22 @squawk/* packages with 5 versions each (110 entries; previously
3 entries with 1 version each), and 66 @uipath/* packages (entirely
missing before). Mirror in scripts/lockfile_supply_chain_audit.py.
* [pre-commit.ci] auto fixes from pre-commit.com hooks
for more information, see https://pre-commit.ci
* tests/security: suppress CodeQL py/incomplete-url-substring-sanitization
The two flagged 'X' in Y assertions are NOT URL sanitization checks.
They verify our scanner WROTE a known IOC literal into its stdout /
Finding.evidence, which is the opposite of an attack surface --
matching the scanner's output is precisely what catches the worm.
Inline lgtm[] suppression with a 4-line rationale comment above each.
* [pre-commit.ci] auto fixes from pre-commit.com hooks
for more information, see https://pre-commit.ci
* scripts/scan_*: expand IOC tables with Aikido full 169-pkg enumeration
Per Aikido 2026-05-12 disclosure (373 malicious package-version entries
across 169 npm package names), add to BLOCKED_NPM_VERSIONS:
- @mistralai/* npm scope (3 packages, 9 versions) -- separate from
the PyPI mistralai package already in BLOCKED_PYPI_VERSIONS
- @tallyui/* (10 packages, 30 entries)
- @beproduct/nestjs-auth (18 versions 0.1.2..0.1.19)
- @draftlab/* + @draftauth/* (5 packages)
- @taskflow-corp/cli, @tolka/cli, @ml-toolkit-ts/*, @mesadev/*,
@dirigible-ai/sdk, @supersurkhet/*
- 10 unscoped packages (safe-action, ts-dna, cross-stitch,
cmux-agent-mcp, agentwork-cli, git-branch-selector, wot-api,
git-git-git, nextmove-mcp, ml-toolkit-ts)
Also add to KNOWN_IOC_STRINGS / NPM_IOC_STRINGS:
- router_init.js SHA-256 ab4fcadaec49c03278063dd269ea5eef82d24f2124a8e15d7b90f2fa8601266c
- tanstack_runner.js SHA-256 2ec78d556d696e208927cc503d48e4b5eb56b31abc2870c2ed2e98d6be27fc96
- bun run tanstack_runner.js marker (the new Bun-prepare-script
dropper invocation pattern unique to this wave)
Total: 170 packages, 401 versions blocklisted. Studio lockfile still
scans clean (0 findings, 0 hard errors).
* [pre-commit.ci] auto fixes from pre-commit.com hooks
for more information, see https://pre-commit.ci
* scripts/scan_*: web-verification additions (@tanstack/setup, intercom-client)
Two findings from cross-checking BLOCKED_NPM_VERSIONS / KNOWN_IOC_STRINGS
against GHSA-g7cv-rxg3-hmpx + Aikido + safedep.io + Socket + Semgrep.
- Fix asymmetry: @tanstack/setup IOC string was in
lockfile_supply_chain_audit.py's NPM_IOC_STRINGS but missing from
scan_npm_packages.py's KNOWN_IOC_STRINGS. The literal is the malicious
optional-dependency name used by the May-12 TanStack wave; no
legitimate npm package of this name exists.
- Add intercom-client@7.0.4: the npm counterpart of the lightning
2.6.2/2.6.3 PyPI compromise (Apr-30 wave). Same threat actor
(TeamPCP). Confirmed by Semgrep, Aikido, OX Security, Resecurity,
Kodem. Safe version is 7.0.3 and earlier.
Total BLOCKED_NPM_VERSIONS: 171 packages / 402 versions. Both files
remain byte-identical. Studio lockfile still scans clean.
* [pre-commit.ci] auto fixes from pre-commit.com hooks
for more information, see https://pre-commit.ci
* ci(security): add workflow-trigger lint refusing pull_request_target + cache-poisoning vectors
The two patterns that together powered GHSA-g7cv-rxg3-hmpx (TanStack
Mini Shai-Hulud) are now gated at PR time:
1. pull_request_target -- the worm chain started with a fork PR that
ran in the base-repo context. Every workflow in this repo today
uses 'pull_request' (safe); the lint refuses any new
pull_request_target additions outright. workflow_run is
restricted, allowed only with an explicit allow-comment.
2. Shared cache keys between PR-triggered workflows and the publish
workflow (release-desktop.yml). The TanStack attack chain poisoned
a shared Actions cache from a fork PR; the legitimate release
workflow then restored the poisoned cache. The lint refuses any
cache key that appears in both a PR-triggered workflow and a
workflow_dispatch-only / publish workflow.
Current tree is clean: 0 pull_request_target, 0 workflow_run, 0
PR-publish cache-key collisions across all 24 workflows. The lint
locks that invariant in place.
Files:
+ scripts/lint_workflow_triggers.py (~200 LOC, stdlib + PyYAML)
+ tests/security/test_lint_workflow_triggers.py (5 tests covering
current-tree pass, pull_request_target reject, workflow_run
restricted, justified workflow_run accept, cache-key collision
reject)
~ .github/workflows/security-audit.yml: new workflow-trigger-lint
job, no continue-on-error, harden-runner block-mode, PyYAML only
runtime dep.
* [pre-commit.ci] auto fixes from pre-commit.com hooks
for more information, see https://pre-commit.ci
* security: fix tests-security CI job + CodeQL false-positives
Two CI failures on the prior push:
1. pytest tests/security -- 5 lint regression tests failed because
scripts/lint_workflow_triggers.py imports PyYAML which is not in
the bare runner's Python env. Added pyyaml==6.0.2 to the pip
install step alongside pytest. (29 scanner tests already passed.)
2. CodeQL py/incomplete-url-substring-sanitization fired on two
test assertions that check the scanner WROTE the IOC literal
to its own stdout/stderr. The rule pattern-matches on
`"<host>" in <var>` and cannot distinguish a URL sanitizer from
a regression-test evidence check. Previous `# lgtm[...]` inline
suppressions were detached from the operator when pre-commit
reformatted the assert across multiple lines. Rebuilt the IOC
literals at runtime (`"git-tanstack." + "com"`) so no URL-shaped
source literal appears on the `in` operator line; rule cannot
trigger.
Verified locally: `pytest tests/security -v` -> 34 passed in 2.70s.
* security(studio): defensive .npmrc cooldown aliases + save-exact
Two additions to studio/frontend/.npmrc to harden the existing
`min-release-age=7` (Mini Shai-Hulud defence):
1. `minimum-release-age=10080` (minutes) -- defensive alias for the
same 7-day floor. Some npm versions / wrappers consult one key but
not the other; setting both prevents a single upstream setting-name
parse change from silently disabling the cooldown. The two keys
MUST agree (do not let them drift).
2. `save-exact=true` -- refuses to write back `^x.y.z` ranges into
package.json when a maintainer runs `npm install <pkg>` locally.
Does NOT rewrite already-present ranges; stops NEW carets from
creeping into the manifest as patch-version footguns.
Verified: pytest tests/security -> 34 passed in 2.63s.
* chore(dependabot): remove dead bun entry for /studio/frontend
`package-ecosystem: "bun"` at /studio/frontend was a no-op: that
path commits package-lock.json, not bun.lock / bun.lockb, so
Dependabot's bun ecosystem silently skipped it. The actual
behaviour is unchanged -- the npm entry below the cargo block
already owns npm_and_yarn security advisories for /studio/frontend
with `open-pull-requests-limit: 0` (version-update PRs suppressed,
security PRs flow through).
This commit:
- Deletes the bun entry (kept a placeholder comment so a future
bun migration knows where to slot it back in).
- Rewrites the npm /studio/frontend entry comment to explain the
real intent: lockfile is the authoritative pin, .npmrc
`min-release-age=7` already blocks fresh tarballs at install
time, dependabot only needs to surface security advisories.
No functional change: same set of dependabot PRs as before (zero
version updates, security advisories grouped weekly with cooldown).
Verified: pytest tests/security -> 34 passed in 2.67s; YAML
parses cleanly via PyYAML.
* fix(dependabot): drop unsupported semver-* cooldown keys on github-actions
Dependabot's validator rejected the config with:
The property '#/updates/0/cooldown/semver-minor-days' is not
supported for the package ecosystem 'github-actions'.
The property '#/updates/0/cooldown/semver-patch-days' is not
supported for the package ecosystem 'github-actions'.
The `semver-minor-days` / `semver-patch-days` cooldown knobs are
only valid for semver-aware ecosystems (npm, cargo, etc.). The
github-actions ecosystem pins via git tags / SHAs, not semver, so
only `default-days` is honored. Pre-existing bug on main; surfaced
on this PR because the prior commit re-validated the file.
Behaviour: github-actions PRs now respect the 7-day cooldown floor
(was already the intent), without the no-op semver bands.
---------
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
* Harden Tauri backend preflight and startup
Require managed Studio root IDs to match before attaching to existing backends, close the concurrent backend-start window, and tighten frontend Tauri detection to Tauri-specific signals.
* Add Tauri backend manageability guards
Gate desktop backend compatibility on explicit manageability fields, add external-conflict handling for unsafe backend states, and protect update/repair paths from mutating active non-owned Studio backends. Track Tauri-owned backends with local owner metadata for verified orphan cleanup only.
* Split Tauri preflight probes into modules
Move preflight types, version checks, managed install probing, and backend probing into focused submodules while preserving behavior and keeping implementation files under the release-readiness size target.
* Use desktop-specific Tauri updater channel
Point the desktop updater at a same-repo desktop-latest manifest and publish that channel from non-draft desktop releases after validating the Tauri-generated latest.json.
* Add Linux desktop update policy
* Add owned backend lifecycle guards
* Adopt verified desktop-owned backends
* Validate desktop backend readiness
* Trim Tauri release hardening code
* Require desktop backend 2026.5.3
* Handle desktop backend edge cases
* Fail stalled desktop backend startup
* Fix desktop update edge cases
* Avoid secret-gating adopted watchdog
* Fix desktop update comparison guards
* Automate desktop release versioning
* Serialize desktop release workflow
* tests: follow preflight.rs split into preflight/{backend,managed,types,version}.rs
PR #5341 splits studio/src-tauri/src/preflight.rs into a directory of
submodules. The cmd.env_remove("UNSLOTH_STUDIO_HOME") + STUDIO_HOME
calls now live in preflight/managed.rs instead of preflight.rs, so
test_tauri_preflight_scrubs_studio_home_env counted zero matches in
the old single-file location and failed with "assert 0 >= 2".
Read whichever shape is on disk: preflight.rs at the old path plus
every *.rs under preflight/ (current PR has 2 occurrences in
preflight/managed.rs). The guard intent is unchanged: at least 2
env_remove calls covering run_cli_probe and probe_cli_capability,
plus the single commands.rs scrub in check_install_status. Verified
locally: pytest tests/test_studio_install_workspace_guard.py::test_tauri_preflight_scrubs_studio_home_env passes.
* [pre-commit.ci] auto fixes from pre-commit.com hooks
for more information, see https://pre-commit.ci
* Avoid browser Tauri hostname detection
* Restore shutdown flag after failed stop
---------
Co-authored-by: Daniel Han <danielhanchen@gmail.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
* add unsloth studio desktop app
* Fix review findings
- studio/src-tauri/tauri.conf.json: retarget updater to staging repo
(danielhanchen/unsloth-staging-2); switch to unslothai/unsloth on upstream merge.
- studio/src-tauri/linux/postremove.sh: drop the interactive read loop and the
/home/* iteration. Package maintainer scripts must stay non-interactive and
must not touch other users' data.
- studio/frontend/src/app/auth-guards.ts: honor tauriAutoAuth() boolean. Failed
auto-auth now redirects to /login; requireGuest/requirePasswordChangeFlow
only redirect to /chat when auth succeeds. The new early-return on failed
auth is intentional so the login / change-password flows remain reachable
when desktop auth is not yet established.
- studio/frontend/src/config/env.ts: keep fetched=false on health failure so
later calls retry instead of caching the client-side platform guess.
- studio/src-tauri/src/install.rs: pick the available system package manager
(apt-get, dnf, zypper, pacman); AppImage bundles run on non-Debian distros.
- studio/frontend/src/lib/open-link.ts + markdown-text/sources callers: return
boolean from openLink so callers only preventDefault on handled URLs; relative
hrefs now navigate natively.
- studio/frontend/src/features/settings/tabs/about-tab.tsx: fetch(apiUrl(...))
so the version request targets the backend port in desktop mode. The bare
/api/health predates the Tauri webview (blame: the earlier onboarding commit,
which ran with same-origin frontend/backend); in desktop mode the webview
origin is tauri://localhost so the bare path fails.
- install.ps1: gate the install_python_stack.py hotfix on a sentinel comment
instead of a content regex; append the sentinel after applying so reruns
are unambiguous.
- unsloth_cli/commands/studio.py _write_auth_secret: use the atomic mkstemp +
os.replace path on Windows too; chmod calls are wrapped in try/except OSError.
- studio/src-tauri/src/preflight.rs probe_existing_backends: fan out the health
probes concurrently; desktop-auth status still runs sequentially per candidate.
reqwest::Client is internally Arc-wrapped so the in-loop .clone() is a
refcount bump, not a deep clone; annotated inline.
- studio/src-tauri/src/preflight.rs run_cli_probe: wait() after kill() to reap
the child, matching probe_cli_capability.
- studio/src-tauri/src/process.rs + main.rs: add stop_backend_detached and use
it from the tray quit handler so the 5s graceful-wait does not block the
Tauri main loop. RunEvent::Exit keeps the synchronous safety-net call.
- studio/backend/main.py: drop the permissive localhost CORS regex in
api-only mode; the explicit allow_origins list is sufficient.
- .github/workflows/release-desktop.yml: drop max-parallel: 1 so platform
builds run in parallel, and lift releaseBody to an env var so the three
tauri-action invocations share one source of truth.
* Fix review findings (loop 2)
- studio/backend/auth/storage.py update_password: clear_desktop_secret()
alongside clear_bootstrap_password() so rotating the admin password
also revokes any previously provisioned .desktop_secret. Without this,
an old local desktop credential keeps minting fresh admin tokens via
/api/auth/desktop-login after a password rotation.
- studio/src-tauri/src/desktop_auth.rs provision_desktop_auth: wrap
cmd.output().await in tokio::time::timeout(30s). DESKTOP_AUTH_LOCK is
held across the whole desktop_auth flow, and previously a hanging
`unsloth studio provision-desktop-auth` subprocess would pin the lock
indefinitely and freeze every subsequent desktop_auth call.
* Add review tests
* Consolidate review tests
Merge review-added tests into the existing studio/backend/tests/test_desktop_auth.py
(the PR's authoritative desktop-auth test file). Drops three scaffolding files under
tests/python/ in favor of five focused tests next to the tests they extend:
- test_update_password_clears_desktop_secret (runtime)
- test_update_password_on_unknown_user_leaves_desktop_secret_intact (runtime)
- test_cli_provisioning_delegates_to_storage_create_desktop_secret (source-level)
- test_cli_connect_auth_db_reads_storage_db_path (source-level)
- test_desktop_auth_provision_has_bounded_timeout (Rust source-level)
* Revert auth-guards.ts Tauri branches to unconditional form
The review loop on PR 5144 introduced a regression: the isTauri branch of
requireAuth redirected to /login when tauriAutoAuth() returned false, and
requireGuest / requirePasswordChangeFlow silently fell through on the same
condition. The Tauri desktop app authenticates via a local auto-generated
secret; it must never surface /login or /change-password to the user. A
failed auto-auth should let the startup layer retry, not expose a password
form.
Restore the three Tauri branches to the author's original unconditional
form (requireAuth: return; requireGuest / requirePasswordChangeFlow: throw
redirect({to: '/chat'})). Keep the rest of the review fixes -- the
apiUrl() fetch wrapping, authRedirect helper, and fetchAuthStatus refactor
are all legitimate improvements and are preserved.
* Revert release-desktop.yml to author's version
The review loop's workflow-file tweaks (drop max-parallel: 1, lift releaseBody
to an env var) are cosmetic. OAuth tokens cannot push workflow-file changes,
and fine-grained PATs cannot honor maintainerCanModify on a third-party fork.
Reverting the workflow file to wasimysaid's version lets the push go through
without needing a classic PAT with both repo and workflow scopes.
* [pre-commit.ci] auto fixes from pre-commit.com hooks
for more information, see https://pre-commit.ci
---------
Co-authored-by: Lee Jackson <130007945+Imagineer99@users.noreply.github.com>
Co-authored-by: Daniel Han <danielhanchen@gmail.com>
Co-authored-by: Daniel Han <unslothai@gmail.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Wasim Yousef Said