CVE-2026-24843

Published: Feb 4, 2026Modified: Jun 17, 2026

8.4

Vector

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

Exploitability: 2.0 / Impact: 5.8

Source: NVD

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.

Affected (1)

Products: Chainguard: Melange

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Chainguard Melange	From 0.11.3 to 0.40.5

Related CWEs

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

References (2)

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

Source: security-advisories@github.com

Patch

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

Source: security-advisories@github.com

PatchVendor Advisory

Timeline

No history available yet.