melange allows users to build apk packages using declarative pipelines. From version 0.3.0 to before 0.40.3, an attacker who can provide build input values, but not modify pipeline definitions, could execute arbitrary shell commands if the pipeline uses ${{vars.*}} or ${{inputs.*}} substitutions in working-directory. The field is embedded into shell scripts without proper quote escaping. This issue has been patched in version 0.40.3.
History

Thu, 05 Feb 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 05 Feb 2026 11:45:00 +0000

Type Values Removed Values Added
First Time appeared Chainguard-dev
Chainguard-dev melange
Vendors & Products Chainguard-dev
Chainguard-dev melange

Wed, 04 Feb 2026 20:00:00 +0000

Type Values Removed Values Added
Description melange allows users to build apk packages using declarative pipelines. From version 0.3.0 to before 0.40.3, an attacker who can provide build input values, but not modify pipeline definitions, could execute arbitrary shell commands if the pipeline uses ${{vars.*}} or ${{inputs.*}} substitutions in working-directory. The field is embedded into shell scripts without proper quote escaping. This issue has been patched in version 0.40.3.
Title melange pipeline working-directory could allow command injection
Weaknesses CWE-78
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-02-04T19:31:55.830Z

Updated: 2026-02-05T14:33:09.866Z

Reserved: 2026-01-27T14:51:03.059Z

Link: CVE-2026-24844

cve-icon Vulnrichment

Updated: 2026-02-05T14:23:15.696Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-04T20:16:05.550

Modified: 2026-02-05T14:57:20.563

Link: CVE-2026-24844

cve-icon Redhat

No data.