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CVE-2025-54416

CriticalPublished

tj-actions/branch-names Contains Command Injection Vulnerability

Published: Jul 26, 2025
Updated: Jul 28, 2025
Assigning CNA: GitHub_M
Evidence observed: Aug 14, 2026

Primary CVSS

9.1/ 10Critical

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L

EPSS probability estimate

0.6%

Low · next 30 days

Percentile: 46.4%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

tj-actions/branch-names is a Github actions repository that contains workflows to retrieve branch or tag names with support for all events. In versions 8.2.1 and below, a critical vulnerability has been identified in the tj-actions/branch-names' GitHub Action workflow which allows arbitrary command execution in downstream workflows. This issue arises due to inconsistent input sanitization and unescaped output, enabling malicious actors to exploit specially crafted branch names or tags. While internal sanitization mechanisms have been implemented, the action outputs remain vulnerable, exposing consuming workflows to significant security risks. This is fixed in version 9.0.0

Sources

atlas-tj-actions-pocPoC
PoC for CVE-2025-54416 tj-actions/branch-names command injection

Responsible use

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