CVE-2023-27581 | BDVDB-2026-197264 Detail
rlespinassegithub-slug-action
Description#
github-slug-action is a GitHub Action to expose slug value of GitHub environment variables inside of one's GitHub workflow. Starting in version 4.0.0` and prior to version 4.4.1, this action uses the `github.head_ref` parameter in an insecure way. This vulnerability can be triggered by any user on GitHub on any workflow using the action on pull requests. They just need to create a pull request with a branch name, which can contain the attack payload. This can be used to execute code on the GitHub runners and to exfiltrate any secrets one uses in the CI pipeline. A patched action is available in version 4.4.1. No workaround is available.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.
Weaknesses#
- CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')
References#
- https://github.com/rlespinasse/github-slug-action/security/advisories/GHSA-6q4m-7476-932w
- https://github.com/rlespinasse/github-slug-action/commit/102b1a064a9b145e56556e22b18b19c624538d94
- https://github.com/rlespinasse/github-slug-action/releases/tag/v4.4.1
- https://securitylab.github.com/research/github-actions-untrusted-input/
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.