CVE-2026-24843

high

Description

melange allows users to build apk packages using declarative pipelines. In version 0.11.3 to before 0.40.3, an attacker who can influence the tar stream from a QEMU guest VM could write files outside the intended workspace directory on the host. The retrieveWorkspace function extracts tar entries without validating that paths stay within the workspace, allowing path traversal via ../ sequences. This issue has been patched in version 0.40.3.

References

https://github.com/chainguard-dev/melange/security/advisories/GHSA-qxx2-7h4c-83f4

https://github.com/chainguard-dev/melange/commit/6e243d0d46699f837d7c392397a694d2bcc7612b

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-5373

Details

Source: Mitre, NVD

Published: 2026-02-04

Updated: 2026-02-18

Named Vulnerability: GO-2026-4407Named Vulnerability: GHSA-qxx2-7h4c-83f4

Risk Information

CVSS v2

Base Score: 6.2

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 8.4

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

Severity: High

EPSS

EPSS: 0.00189