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TI-2023-26927 Aliases CVE-2023-49291GHSA-8v8w-v8xg-79rf

Improper Sanitization of Branch Name Leads to Arbitrary Code Injection

Priority MEDIUM 45CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

EPSS 0.01448 73rd percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Fixed branch-names (tj-actions): 7.0.7tj-actions/branch-names (GitHub Actions): 7.0.7

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
tj-actionsbranch-namesbefore 7.0.77.0.7Patch availableCNA
—tj-actions/branch-names (GitHub Actions)before 7.0.77.0.7Patch availableGHSA-8v8w-v8xg-79rf
  • branch-names Vendortj-actions Affected before 7.0.7 Fixed in 7.0.7 Patch available CNA
  • tj-actions/branch-names (GitHub Actions) Vendor— Affected before 7.0.7 Fixed in 7.0.7 Patch available GHSA-8v8w-v8xg-79rf

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:tj-actions:branch-names:*:*:*:*:*:*:*:*before 7.0.0; 7.0.1 to before 7.0.7Vulnerabletj-actions
  • cpe:2.3:a:tj-actions:branch-names:*:*:*:*:*:*:*:* Versions before 7.0.0; 7.0.1 to before 7.0.7 Vulnerable ·tj-actions

Remediation

  • Fix · CNA branch-names (tj-actions) Fixed in 7.0.7
  • Fix · GHSA-8v8w-v8xg-79rf tj-actions/branch-names (GitHub Actions) Fixed in 7.0.7 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-49291
  2. 2026-10-03 Alias added: GHSA-8v8w-v8xg-79rf

References

Exploit 2

Patch 3

Advisory 1

Other 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences