melange pipeline working-directory could allow command injection

高 8.8CVE-2026-24844 · GHSA-vqqr-rmpc-hhg2 · GO-2026-4408 · 04/02/2026 公開 · 17/06/2026 更新

要点

CVE-2026-24844 は chainguard.dev/melange, melange (chainguard) に影響する深刻度「高」 (CVSS 8.8) の脆弱性です。
今後30日間に悪用される確率（EPSS）：0.20%（全脆弱性の 9.6% より高い）。
対処：0.40.3 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
chainguard.dev/melange Go	`≥ 0.3.0, < 0.40.3`	`0.40.3`
melange chainguard	`≥ 0.3.0, ≤ 0.40.5`	修正版なし

概要

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.

NVD の説明

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.