{"id":"CVE-2023-49291","summary":"Improper Sanitization of Branch Name Leads to Arbitrary Code Injection","details":"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.","aliases":["GHSA-8v8w-v8xg-79rf"],"modified":"2026-08-12T03:51:28.797953484Z","published":"2023-12-04T23:21:33.367Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-20"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/49xxx/CVE-2023-49291.json"},"references":[{"type":"WEB","url":"https://securitylab.github.com/research/github-actions-untrusted-input"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/49xxx/CVE-2023-49291.json"},{"type":"ADVISORY","url":"https://github.com/tj-actions/branch-names/security/advisories/GHSA-8v8w-v8xg-79rf"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-49291"},{"type":"FIX","url":"https://github.com/tj-actions/branch-names/commit/4923d1ca41f928c24f1c1b3af9daaadfb71e6337"},{"type":"FIX","url":"https://github.com/tj-actions/branch-names/commit/6c999acf206f5561e19f46301bb310e9e70d8815"},{"type":"FIX","url":"https://github.com/tj-actions/branch-names/commit/726fe9ba5e9da4fcc716223b7994ffd0358af060"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/tj-actions/branch-names","events":[{"introduced":"0"},{"fixed":"604fda4f4254216e3b564d60fe27d68017756558"},{"introduced":"4e532392367d7e4fb2f494f2d50c47562660cce5"},{"fixed":"6c999acf206f5561e19f46301bb310e9e70d8815"},{"fixed":"4923d1ca41f928c24f1c1b3af9daaadfb71e6337"},{"fixed":"726fe9ba5e9da4fcc716223b7994ffd0358af060"}],"database_specific":{"source":["CPE_RANGE","REFERENCES"],"cpe":"cpe:2.3:a:tj-actions:branch-names:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"7.0.0"},{"introduced":"7.0.1"},{"fixed":"7.0.7"}]}}],"versions":["v7.0.6","v7.0.5","v7.0.4","v7.0.3","v7.0.2","v7.0.1","v6.5","v6","v6.4","v6.3","v6.2","v6.1","v5.6","v5.5","v5.4","v5.3","v5.2","v5.1","v5","v4.9","v4.8","v4.7","v4.6","v4.5","v4.4","v4.3","v4.2","v4","v4.1","v3.6","v3.5","v3.4","v3.3","v3.2","v3.1","v3","v2.2","v2.1","v2","v1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-49291.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N"}]}