GitHub Actions vulnerabilities

Browse known CVEs and advisories by package and ecosystem. Severity tells you the worst case. What determines real risk is whether the vulnerable code actually runs in your applications.

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CVE-IDSeverityPackage summary
GHSA-C3XH-98XP-6QHFHighgouef/githubtoplanguages: githubtoplanguages: Command Injection via Issue Title in Discord Notification WorkflowCVE-2026-47751Mediumanthropics/claude-code-action: Claude Code Action: Malicious MCP Server Configuration in PRs Enables Remote Code Execution and Secret ExfiltrationGHSA-5WXR-W449-57CMMediumshivammathur/setup-php: Setup PHP: GitHub tokens configured by setup-php may be exposed through pinned affected Composer versionsCVE-2026-46420Mediumshivammathur/setup-php: Setup PHP: Command Injection in Repository-Derived PHP Version ResolutionGHSA-WPQR-6V78-JR5GCritical@google/gemini-cli: Gemini CLI: Remote Code Execution via workspace trust and tool allowlisting bypassesGHSA-6P2J-742G-835FMediumTiryoh/actions-mkdocs: actions-mkdocs: Command Injection via issue title in internal GitHub Actions workflowCVE-2026-34243Criticalnjzjz/wenxian: wenxian: Command Injection in GitHub Actions Workflow via `issue_comment.body` CVE-2026-33634Criticalgithub.com/aquasecurity/trivy: Trivy ecosystem supply chain was briefly compromisedGHSA-F67F-HCR6-94MFCriticalSHAdd0WTAka/Zen-Ai-Pentest: Zen-AI-Pentest has Shell Injection via untrusted issue title in ZenClaw Discord Integration workflowCVE-2026-32947Mediumstep-security/harden-runner: Egress Policy Bypass via DNS over HTTPS (DoH) in Harden-Runner (Community Tier)CVE-2026-32946Mediumstep-security/harden-runner: Egress Policy Bypass via DNS over TCP in Harden-Runner (Community Tier)CVE-2026-31976Criticalxygeni/xygeni-action: xygeni-action v5 tag poisoned with C2 backdoorCVE-2026-31900Highpsf/black: Black's vulnerable version parsing leads to RCE in GitHub ActionCVE-2026-26189Mediumaquasecurity/trivy-action: Trivy Action has a script injection via sourced env file in composite actionCVE-2026-25761Highsuper-linter/super-linter: Super-linter is vulnerable to command injection via crafted filenames in Super-linter ActionCVE-2026-25598Mediumstep-security/harden-runner: Harden-Runner: Bypassing Logging of Outbound Connections Using sendto, sendmsg, and sendmmsg in Harden-Runner (Community Tier)GHSA-PWF7-47C3-MFHXCriticalj178/prek-action: j178/prek-action vulnerable to arbitrary code injection in composite actionCVE-2025-59844HighSonarSource/sonarqube-scan-action: Argument injection vulnerability in SonarQube Scan ActionGHSA-VXMW-7H4F-HQXHLowpypa/gh-action-pypi-publish: PyPI publish GitHub Action vulnerable to injectable expression expansions in action stepsCVE-2025-58178HighSonarSource/sonarqube-scan-action: Command Injection via sonarqube-scan-action GitHub ActionCVE-2024-48908Mediumlycheeverse/lychee-action: lychee link checking action affected by arbitrary code injection in composite actionGHSA-X6GV-2RVH-QMP6Criticalm00nl1ght-dev/steam-workshop-deploy: m00nl1ght-dev/steam-workshop-deploy: Exposure of Version-Control Repository to an Unauthorized Control Sphere and Insufficiently Protected…CVE-2025-54416Criticaltj-actions/branch-names: tj-actions/branch-names has a Command Injection VulnerabilityGHSA-C5QX-P38X-QF5WHighRageAgainstThePixel/setup-steamcmd: RageAgainstThePixel/setup-steamcmd leaked authentication token in job output logsGHSA-MJ96-MH85-R574Highbuildalon/setup-steamcmd: buildalon/setup-steamcmd leaked authentication token in job output logs

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