fix: prevent command injection in workflow example files

Fixes command injection vulnerabilities in example workflow files by using
environment variables instead of direct template expansion in shell commands.

This prevents malicious branch names containing command substitution syntax
like $(cmd) from being executed by the shell.

Files fixed:
- examples/ci-failure-auto-fix.yml: github.event.workflow_run.head_branch
- examples/test-failure-analysis.yml: github.event.workflow_run.name and head_branch

action.yml

@@ -198,7 +198,7 @@ runs:
 
         # Install Claude Code if no custom executable is provided
         if [ -z "$PATH_TO_CLAUDE_CODE_EXECUTABLE" ]; then
-          CLAUDE_CODE_VERSION="2.0.69"
+          CLAUDE_CODE_VERSION="2.0.70"
           echo "Installing Claude Code v${CLAUDE_CODE_VERSION}..."
           for attempt in 1 2 3; do
             echo "Installation attempt $attempt..."

base-action/action.yml

@@ -124,7 +124,7 @@ runs:
         PATH_TO_CLAUDE_CODE_EXECUTABLE: ${{ inputs.path_to_claude_code_executable }}
       run: |
         if [ -z "$PATH_TO_CLAUDE_CODE_EXECUTABLE" ]; then
-          CLAUDE_CODE_VERSION="2.0.69"
+          CLAUDE_CODE_VERSION="2.0.70"
           echo "Installing Claude Code v${CLAUDE_CODE_VERSION}..."
           for attempt in 1 2 3; do
             echo "Installation attempt $attempt..."

base-action/bun.lock

@@ -1,11 +1,12 @@
 {
   "lockfileVersion": 1,
+  "configVersion": 0,
   "workspaces": {
     "": {
       "name": "@anthropic-ai/claude-code-base-action",
       "dependencies": {
         "@actions/core": "^1.10.1",
-        "@anthropic-ai/claude-agent-sdk": "^0.1.52",
+        "@anthropic-ai/claude-agent-sdk": "^0.1.70",
         "shell-quote": "^1.8.3",
       },
       "devDependencies": {
@@ -26,7 +27,7 @@
 
     "@actions/io": ["@actions/io@1.1.3", "", {}, "sha512-wi9JjgKLYS7U/z8PPbco+PvTb/nRWjeoFlJ1Qer83k/3C5PHQi28hiVdeE2kHXmIL99mQFawx8qt/JPjZilJ8Q=="],
 
-    "@anthropic-ai/claude-agent-sdk": ["@anthropic-ai/claude-agent-sdk@0.1.52", "", { "optionalDependencies": { "@img/sharp-darwin-arm64": "^0.33.5", "@img/sharp-darwin-x64": "^0.33.5", "@img/sharp-linux-arm": "^0.33.5", "@img/sharp-linux-arm64": "^0.33.5", "@img/sharp-linux-x64": "^0.33.5", "@img/sharp-linuxmusl-arm64": "^0.33.5", "@img/sharp-linuxmusl-x64": "^0.33.5", "@img/sharp-win32-x64": "^0.33.5" }, "peerDependencies": { "zod": "^3.24.1" } }, "sha512-yF8N05+9NRbqYA/h39jQ726HTQFrdXXp7pEfDNKIJ2c4FdWvEjxBA/8ciZIebN6/PyvGDcbEp3yq2Co4rNpg6A=="],
+    "@anthropic-ai/claude-agent-sdk": ["@anthropic-ai/claude-agent-sdk@0.1.70", "", { "optionalDependencies": { "@img/sharp-darwin-arm64": "^0.33.5", "@img/sharp-darwin-x64": "^0.33.5", "@img/sharp-linux-arm": "^0.33.5", "@img/sharp-linux-arm64": "^0.33.5", "@img/sharp-linux-x64": "^0.33.5", "@img/sharp-linuxmusl-arm64": "^0.33.5", "@img/sharp-linuxmusl-x64": "^0.33.5", "@img/sharp-win32-x64": "^0.33.5" }, "peerDependencies": { "zod": "^3.24.1" } }, "sha512-4jpFPDX8asys6skO1r3Pzh0Fe9nbND2ASYTWuyFB5iN9bWEL6WScTFyGokjql3M2TkEp9ZGuB2YYpTCdaqT9Sw=="],
 
     "@fastify/busboy": ["@fastify/busboy@2.1.1", "", {}, "sha512-vBZP4NlzfOlerQTnba4aqZoMhE/a9HY7HRqoOPaETQcSQuWEIyZMHGfVu6w9wGtGK5fED5qRs2DteVCjOH60sA=="],
 

base-action/package.json

@@ -11,7 +11,7 @@
   },
   "dependencies": {
     "@actions/core": "^1.10.1",
-    "@anthropic-ai/claude-agent-sdk": "^0.1.52",
+    "@anthropic-ai/claude-agent-sdk": "^0.1.70",
     "shell-quote": "^1.8.3"
   },
   "devDependencies": {

bun.lock

@@ -1,12 +1,13 @@
 {
   "lockfileVersion": 1,
+  "configVersion": 0,
   "workspaces": {
     "": {
       "name": "@anthropic-ai/claude-code-action",
       "dependencies": {
         "@actions/core": "^1.10.1",
         "@actions/github": "^6.0.1",
-        "@anthropic-ai/claude-agent-sdk": "^0.1.52",
+        "@anthropic-ai/claude-agent-sdk": "^0.1.70",
         "@modelcontextprotocol/sdk": "^1.11.0",
         "@octokit/graphql": "^8.2.2",
         "@octokit/rest": "^21.1.1",
@@ -36,7 +37,7 @@
 
     "@actions/io": ["@actions/io@1.1.3", "", {}, "sha512-wi9JjgKLYS7U/z8PPbco+PvTb/nRWjeoFlJ1Qer83k/3C5PHQi28hiVdeE2kHXmIL99mQFawx8qt/JPjZilJ8Q=="],
 
-    "@anthropic-ai/claude-agent-sdk": ["@anthropic-ai/claude-agent-sdk@0.1.52", "", { "optionalDependencies": { "@img/sharp-darwin-arm64": "^0.33.5", "@img/sharp-darwin-x64": "^0.33.5", "@img/sharp-linux-arm": "^0.33.5", "@img/sharp-linux-arm64": "^0.33.5", "@img/sharp-linux-x64": "^0.33.5", "@img/sharp-linuxmusl-arm64": "^0.33.5", "@img/sharp-linuxmusl-x64": "^0.33.5", "@img/sharp-win32-x64": "^0.33.5" }, "peerDependencies": { "zod": "^3.24.1" } }, "sha512-yF8N05+9NRbqYA/h39jQ726HTQFrdXXp7pEfDNKIJ2c4FdWvEjxBA/8ciZIebN6/PyvGDcbEp3yq2Co4rNpg6A=="],
+    "@anthropic-ai/claude-agent-sdk": ["@anthropic-ai/claude-agent-sdk@0.1.70", "", { "optionalDependencies": { "@img/sharp-darwin-arm64": "^0.33.5", "@img/sharp-darwin-x64": "^0.33.5", "@img/sharp-linux-arm": "^0.33.5", "@img/sharp-linux-arm64": "^0.33.5", "@img/sharp-linux-x64": "^0.33.5", "@img/sharp-linuxmusl-arm64": "^0.33.5", "@img/sharp-linuxmusl-x64": "^0.33.5", "@img/sharp-win32-x64": "^0.33.5" }, "peerDependencies": { "zod": "^3.24.1" } }, "sha512-4jpFPDX8asys6skO1r3Pzh0Fe9nbND2ASYTWuyFB5iN9bWEL6WScTFyGokjql3M2TkEp9ZGuB2YYpTCdaqT9Sw=="],
 
     "@fastify/busboy": ["@fastify/busboy@2.1.1", "", {}, "sha512-vBZP4NlzfOlerQTnba4aqZoMhE/a9HY7HRqoOPaETQcSQuWEIyZMHGfVu6w9wGtGK5fED5qRs2DteVCjOH60sA=="],
 

examples/ci-failure-auto-fix.yml

@@ -35,8 +35,11 @@ jobs:
 
       - name: Create fix branch
         id: branch
+        env:
+          SOURCE_BRANCH: ${{ github.event.workflow_run.head_branch }}
+          RUN_ID: ${{ github.run_id }}
         run: |
-          BRANCH_NAME="claude-auto-fix-ci-${{ github.event.workflow_run.head_branch }}-${{ github.run_id }}"
+          BRANCH_NAME="claude-auto-fix-ci-${SOURCE_BRANCH}-${RUN_ID}"
           git checkout -b "$BRANCH_NAME"
           echo "branch_name=$BRANCH_NAME" >> $GITHUB_OUTPUT
 

examples/test-failure-analysis.yml

@@ -53,6 +53,8 @@ jobs:
           fromJSON(steps.detect.outputs.structured_output).confidence >= 0.7
         env:
           GH_TOKEN: ${{ github.token }}
+          WORKFLOW_NAME: ${{ github.event.workflow_run.name }}
+          HEAD_BRANCH: ${{ github.event.workflow_run.head_branch }}
         run: |
           OUTPUT='${{ steps.detect.outputs.structured_output }}'
           CONFIDENCE=$(echo "$OUTPUT" | jq -r '.confidence')
@@ -63,8 +65,8 @@ jobs:
           echo ""
           echo "Triggering automatic retry..."
 
-          gh workflow run "${{ github.event.workflow_run.name }}" \
+          gh workflow run "$WORKFLOW_NAME" \
-            --ref "${{ github.event.workflow_run.head_branch }}"
+            --ref "$HEAD_BRANCH"
 
       # Low confidence flaky detection - skip retry
       - name: Low confidence detection
@@ -83,13 +85,14 @@ jobs:
         if: github.event.workflow_run.event == 'pull_request'
         env:
           GH_TOKEN: ${{ github.token }}
+          HEAD_BRANCH: ${{ github.event.workflow_run.head_branch }}
         run: |
           OUTPUT='${{ steps.detect.outputs.structured_output }}'
           IS_FLAKY=$(echo "$OUTPUT" | jq -r '.is_flaky')
           CONFIDENCE=$(echo "$OUTPUT" | jq -r '.confidence')
           SUMMARY=$(echo "$OUTPUT" | jq -r '.summary')
 
-          pr_number=$(gh pr list --head "${{ github.event.workflow_run.head_branch }}" --json number --jq '.[0].number')
+          pr_number=$(gh pr list --head "$HEAD_BRANCH" --json number --jq '.[0].number')
 
           if [ -n "$pr_number" ]; then
             if [ "$IS_FLAKY" = "true" ]; then

package.json

@@ -12,7 +12,7 @@
   "dependencies": {
     "@actions/core": "^1.10.1",
     "@actions/github": "^6.0.1",
-    "@anthropic-ai/claude-agent-sdk": "^0.1.52",
+    "@anthropic-ai/claude-agent-sdk": "^0.1.70",
     "@modelcontextprotocol/sdk": "^1.11.0",
     "@octokit/graphql": "^8.2.2",
     "@octokit/rest": "^21.1.1",