PT-2026-6488 · Go · Chainguard.Dev/Melange

Published 2026-02-03 · Updated 2026-02-03

OSV

CVSS v3.1

7.9

High

Base vector

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

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.

Fix: Fixed with e51ca30c, Released.

Acknowledgements

melange thanks Oleh Konko from 1seal for discovering and reporting this issue.

Fix

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

GHSA-VQQR-RMPC-HHG2

Affected Products

Chainguard.Dev/Melange

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-24844 · Security Note
• https://osv.dev/vulnerability/GHSA-vqqr-rmpc-hhg2 · Vendor Advisory
• https://github.com/chainguard-dev/melange · Note
• https://github.com/chainguard-dev/melange/commit/e51ca30cfb63178f5a86997d23d3fff0359fa6c8 · Note
• https://github.com/chainguard-dev/melange/security/advisories/GHSA-vqqr-rmpc-hhg2 · Note