Path Traversal Vulnerability in melange by Chainguard
CVE-2026-24843

8.2HIGH

Key Information:

Vendor

Chainguard-dev

Status
Melange
Vendor
CVE Published:
4 February 2026

What is CVE-2026-24843?

The melange product by Chainguard is subject to a path traversal vulnerability, allowing an attacker with influence over the tar stream from a QEMU guest VM to write files outside the secured workspace directory on the host system. This occurs due to the retrieveWorkspace function failing to properly validate paths, which can lead to exploitation through the use of '../' sequences in the file paths. Users are urged to upgrade to version 0.40.3 or later, where this issue has been addressed.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Affected Version(s)

melange >= 0.11.3, < 0.40.3

References

https://github.com/chainguard-dev/melange/security/adviso...
x_refsource_CONFIRM
https://github.com/chainguard-dev/melange/commit/6e243d0d...
x_refsource_MISC

CVSS V3.1

Score:
8.2
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
.