Package ecosystem
GitHub Actions package vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 6 vulnerabilities in GitHub Actions packages: 0 in the last 7 days and 3 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-55158, was published on 15 September 2026.
- Last 7 days
- 0
- Last 90 days
- 3
- Critical, all time
- 1
- Exploited in the wild
- 0
About GitHub Actions
Adobe is a multinational software company specializing in creative, marketing, and document management solutions.
Latest GitHub Actions package vulnerabilities
- CVE-2026-55158: Conflibot warns in advance when merging a pull request will cause conflicts in other open pull requests. Prior to 1.2.1…criticalCVSS 9.1EPSS 0.8%
- CVE-2026-46420: shivammathur setup-php command injection in PHP version resolutionmediumCVSS 5.6
- CVE-2026-47751: Anthropic Claude Code Action arbitrary code execution in GitHub Actions runnermediumCVSS 5.3
- Google Gemini CLI OS command injection in container launcherhighCVSS 7.8
- gouef githubtoplanguages command injection in Discord notification workflowhighCVSS 7.1
- shivammathur setup-php GitHub token disclosure via pinned Composer versionsmediumCVSS 5.9
Most severe GitHub Actions package vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-55158: Conflibot warns in advance when merging a pull request will cause conflicts in other open pull requests. Prior to 1.2.1…criticalCVSS 9.1EPSS 0.8%
- Google Gemini CLI OS command injection in container launcherhighCVSS 7.8
- gouef githubtoplanguages command injection in Discord notification workflowhighCVSS 7.1
- shivammathur setup-php GitHub token disclosure via pinned Composer versionsmediumCVSS 5.9
- CVE-2026-46420: shivammathur setup-php command injection in PHP version resolutionmediumCVSS 5.6
- CVE-2026-47751: Anthropic Claude Code Action arbitrary code execution in GitHub Actions runnermediumCVSS 5.3
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 2 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 1 | 1 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/vendors/actions.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "GitHub Actions package vulnerabilities", https://junglewise.ai/threats/vendors/actions, 26 September 2026.