fix(ci): harden GitHub Actions workflows (#14789)

.github/workflows/benchmark.yml

@@ -33,7 +33,7 @@ jobs:
       options: --shm-size "16gb" --ipc host --gpus all
     steps:
       - name: Checkout diffusers
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
         with:
           fetch-depth: 2
       - name: NVIDIA-SMI
@@ -63,7 +63,7 @@ jobs:
 
       - name: Test suite reports artifacts
         if: ${{ always() }}
-        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f  # v6
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
         with:
           name: benchmark_test_reports
           path: benchmarks/${{ env.BASE_PATH }}

.github/workflows/bot_pytest.yml

@@ -75,7 +75,7 @@ jobs:
         shell: bash
     steps:
       - name: Checkout PR head
-        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           # Works for forks too — no fork credentials needed.
           ref: refs/pull/${{ github.event.issue.number }}/head
@@ -116,7 +116,7 @@ jobs:
 
       - name: Test suite reports artifacts
         if: ${{ always() }}
-        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
           name: bot_gpu_test_reports
           path: reports

.github/workflows/build_docker_images.yml

@@ -31,10 +31,10 @@ jobs:
       pull-requests: read
     steps:
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f  # v3.12.0
+        uses: docker/setup-buildx-action@f87e5991a6d7451dcb8d9637bfbc97413f497069  # v4.4.1
 
       - name: Check out code
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
 
       - name: Find Changed Dockerfiles
         id: file_changes
@@ -107,16 +107,16 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f  # v3.12.0
+        uses: docker/setup-buildx-action@f87e5991a6d7451dcb8d9637bfbc97413f497069  # v4.4.1
       - name: Login to Docker Hub
-        uses: docker/login-action@c94ce9fb468520275223c153574b00df6fe4bcc9  # v3.7.0
+        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f  # v4.6.0
         with:
           username: ${{ env.REGISTRY }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
       - name: Build and push
-        uses: docker/build-push-action@10e90e3645eae34f1e60eeb005ba3a3d33f178e8  # v6.19.2
+        uses: docker/build-push-action@c3c9e263c25d99ce0380d002d59b67737d91b0dc  # v7.4.0
         with:
           no-cache: true
           context: ./docker/${{ matrix.image-name }}

.github/workflows/build_documentation.yml

@@ -17,7 +17,7 @@ permissions:
 
 jobs:
   build:
-    uses: huggingface/doc-builder/.github/workflows/build_main_documentation.yml@9fc8a41d7729c424fdb2192f2f85ff63102ec9a3  # main
+    uses: huggingface/doc-builder/.github/workflows/build_main_documentation.yml@c69e96c087165ba49b1788e0c3464654dd60253c  # main
     with:
       commit_sha: ${{ github.sha }}
       install_libgl1: true

.github/workflows/build_pr_documentation.yml

@@ -22,10 +22,10 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
 
       - name: Set up Python
-        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405  # v6
+        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97  # v6
         with:
           python-version: '3.10'
 
@@ -44,7 +44,7 @@ jobs:
 
   build:
     needs: check-links
-    uses: huggingface/doc-builder/.github/workflows/build_pr_documentation.yml@9fc8a41d7729c424fdb2192f2f85ff63102ec9a3  # main
+    uses: huggingface/doc-builder/.github/workflows/build_pr_documentation.yml@c69e96c087165ba49b1788e0c3464654dd60253c  # main
     with:
       commit_sha: ${{ github.event.pull_request.head.sha }}
       pr_number: ${{ github.event.number }}

.github/workflows/claude_review.yml

@@ -36,7 +36,7 @@ jobs:
       cancel-in-progress: false
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd #v6.0.2
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           fetch-depth: 1
 
@@ -86,7 +86,7 @@ jobs:
           git clone --local --bare . /tmp/local-origin.git
           git config url."file:///tmp/local-origin.git".insteadOf "$(git remote get-url origin)"
 
-      - uses: anthropics/claude-code-action@80b31826338489861333dc17217865dfe8085cdc  # v1.0.155
+      - uses: anthropics/claude-code-action@6c690188da61cf16ee7debb28383ba67f02abb4c  # v1.0.242
         env:
           CLAUDE_SYSTEM_PROMPT: |
             You are a strict code reviewer for the diffusers library (huggingface/diffusers).

.github/workflows/codeql.yml

@@ -10,7 +10,7 @@ on:
 jobs:
   codeql:
     name: CodeQL Analysis
-    uses: huggingface/security-workflows/.github/workflows/codeql-reusable.yml@dc6ca34688e6876c2dd18750719b44d177586c17  # v1
+    uses: huggingface/security-workflows/.github/workflows/codeql-reusable.yml@e0d40aaf3c566a5e820787840453f45f909e337f  # v1.2.0
     permissions:
       security-events: write
       packages: read

.github/workflows/diffusers_bot.yml

@@ -46,7 +46,7 @@ jobs:
     steps:
       - name: Authorize and parse command
         id: check
-        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd  # v8.0.0
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3  # v9.0.0
         with:
           script: |
             const commenter = context.payload.comment.user.login;

.github/workflows/issue_labeler.yml

@@ -14,7 +14,7 @@ jobs:
       issues: write
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
       - name: Install dependencies
         run: pip install huggingface_hub
       - name: Get labels from LLM
@@ -24,7 +24,28 @@ jobs:
           ISSUE_TITLE: ${{ github.event.issue.title }}
           ISSUE_BODY: ${{ github.event.issue.body }}
         run: |
-          LABELS=$(python utils/label_issues.py)
+          # Truncate untrusted input before passing it to the LLM
+          export ISSUE_TITLE="${ISSUE_TITLE:0:256}"
+          export ISSUE_BODY="${ISSUE_BODY:0:4000}"
+          LABELS_RAW=$(python utils/label_issues.py) || LABELS_RAW='[]'
+          export LABELS_RAW
+          # Validate model output: must be a JSON list of short, safe label strings, emitted as a single line
+          LABELS=$(python3 - <<'PYEOF'
+          import json, os, re
+          try:
+              data = json.loads(os.environ.get("LABELS_RAW", ""))
+          except Exception:
+              data = []
+          if not isinstance(data, list):
+              data = []
+          out = []
+          for l in data:
+              if isinstance(l, str) and re.fullmatch(r"[A-Za-z0-9 _.:/-]{1,50}", l) and l not in out:
+                  out.append(l)
+          print(json.dumps(out[:5]))
+          PYEOF
+          )
+          if [ "$LABELS" = "[]" ]; then LABELS=""; fi
           echo "labels=$LABELS" >> "$GITHUB_OUTPUT"
       - name: Apply labels
         if: steps.get-labels.outputs.labels != ''
@@ -33,6 +54,17 @@ jobs:
           ISSUE_NUMBER: ${{ github.event.issue.number }}
           LABELS: ${{ steps.get-labels.outputs.labels }}
         run: |
-          for label in $(echo "$LABELS" | python -c "import json,sys; print('\n'.join(json.load(sys.stdin)))"); do
-            gh issue edit "$ISSUE_NUMBER" --add-label "$label"
+          # Only allow labels that already exist in the repository and are not automation/privileged labels
+          ALLOWED=$(gh label list --repo "$GITHUB_REPOSITORY" --limit 500 --json name --jq '.[].name')
+          printf '%s' "$LABELS" | python3 -c "import json,sys; print('\n'.join(json.load(sys.stdin)))" | while IFS= read -r label; do
+            [ -z "$label" ] && continue
+            if printf '%s' "$label" | grep -Eiq '(deploy|approv|safe[- _]?to|ok[- _]?to|merge|release|lgtm|run[- _]|ci[- _:]|security|priority|critical)'; then
+              echo "Skipping privileged label: $label"
+              continue
+            fi
+            if ! printf '%s\n' "$ALLOWED" | grep -Fxq -- "$label"; then
+              echo "Skipping unknown label: $label"
+              continue
+            fi
+            gh issue edit "$ISSUE_NUMBER" --repo "$GITHUB_REPOSITORY" --add-label "$label"
           done

.github/workflows/mirror_community_pipeline.yml

@@ -71,13 +71,13 @@ jobs:
         run: |
           echo "CHECKOUT_REF: ${{ env.CHECKOUT_REF }}"
           echo "PATH_IN_REPO: ${{ env.PATH_IN_REPO }}"
-      - uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           ref: ${{ env.CHECKOUT_REF }}
 
       # Setup + install dependencies
       - name: Set up Python
-        uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6.3.0
+        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
           python-version: "3.10"
       - name: Install dependencies