CVE-2026-24843

HIGH

8.2

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.

CVE Details

CVSS v3.1 Score8.2

SeverityHIGH

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

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published2/4/2026

Last Modified2/18/2026

Sourcenvd

Honeypot Sightings0

Affected Products

chainguard:melange

Weaknesses (CWE)

CWE-22

References

https://github.com/chainguard-dev/melange/commit/6e243d0d46699f837d7c392397a694d2bcc7612b(security-advisories@github.com)

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

IOC Correlations

No correlations recorded

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