CVE-2023-49291

tj-actions/branch-names is a Github action to retrieve branch or tag names with support for all events. The `tj-actions/branch-names` GitHub Actions improperly references the `github.event.pull_request.head.ref` and `github.head_ref` context variables within a GitHub Actions `run` step. The head ref variable is the branch name and can be used to execute arbitrary code using a specially crafted branch name. As a result an attacker can use this vulnerability to steal secrets from or abuse `GITHUB_TOKEN` permissions. This vulnerability has been addressed in version 7.0.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.

• CWE-20

• https://github.com/tj-actions/branch-names/commit/4923d1ca41f928c24f1c1b3af9daaadfb71e6337Patch
• https://github.com/tj-actions/branch-names/commit/6c999acf206f5561e19f46301bb310e9e70d8815Patch
• https://github.com/tj-actions/branch-names/commit/726fe9ba5e9da4fcc716223b7994ffd0358af060Patch
• https://github.com/tj-actions/branch-names/security/advisories/GHSA-8v8w-v8xg-79rfExploit, Vendor Advisory
• https://securitylab.github.com/research/github-actions-untrusted-inputExploit, Third Party Advisory
• https://github.com/tj-actions/branch-names/commit/4923d1ca41f928c24f1c1b3af9daaadfb71e6337Patch
• https://github.com/tj-actions/branch-names/commit/6c999acf206f5561e19f46301bb310e9e70d8815Patch
• https://github.com/tj-actions/branch-names/commit/726fe9ba5e9da4fcc716223b7994ffd0358af060Patch
• https://github.com/tj-actions/branch-names/security/advisories/GHSA-8v8w-v8xg-79rfExploit, Vendor Advisory
• https://securitylab.github.com/research/github-actions-untrusted-inputExploit, Third Party Advisory

Published

Dec 5, 2023

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2023-49286Squid is a caching proxy for the Web supporting HTTP, HTTPS,…7.5
• CVE-2023-49287TinyDir is a lightweight C directory and file reader. Buffer…9.8
• CVE-2023-49288Squid is a caching proxy for the Web supporting HTTP, HTTPS,…7.5
• CVE-2023-49289Ajax.NET Professional (AjaxPro) is an AJAX framework for Mic…5.4
• CVE-2023-4929All firmware versions of the NPort 5000 Series are affected …8.8
• CVE-2023-49290lestrrat-go/jwx is a Go module implementing various JWx (JWA…5.3
• CVE-2023-49292ecies is an Elliptic Curve Integrated Encryption Scheme for …4.8
• CVE-2023-49293Vite is a website frontend framework. When Vite's HTML trans…6.1
• CVE-2023-49294Asterisk is an open source private branch exchange and telep…7.5
• CVE-2023-49295quic-go is an implementation of the QUIC protocol (RFC 9000,…6.5
• CVE-2023-49296The Arduino Create Agent allows users to use the Arduino Cre…6.1
• CVE-2023-49297PyDrive2 is a wrapper library of google-api-python-client th…7.8