Description
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.
References (5)
Core 5
Core References
Exploit, Vendor Advisory x_refsource_confirm
https://github.com/tj-actions/branch-names/security/advisories/GHSA-8v8w-v8xg-79rf
Patch x_refsource_misc
https://github.com/tj-actions/branch-names/commit/4923d1ca41f928c24f1c1b3af9daaadfb71e6337
Patch x_refsource_misc
https://github.com/tj-actions/branch-names/commit/6c999acf206f5561e19f46301bb310e9e70d8815
Patch x_refsource_misc
https://github.com/tj-actions/branch-names/commit/726fe9ba5e9da4fcc716223b7994ffd0358af060
Exploit, Third Party Advisory x_refsource_misc
https://securitylab.github.com/research/github-actions-untrusted-input
Scores
CVSS v3
9.3
EPSS
0.0113
EPSS Percentile
78.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N
Details
CWE
CWE-20
Status
published
Products (2)
GitHub Actions/tj-actions/branch-names
0 - 7.0.7GitHub Actions
tj-actions/branch-names
< 7.0.0
Published
Dec 05, 2023
Tracked Since
Feb 18, 2026