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Details of issue NIXPKGS-2026-0092

NIXPKGS-2026-0092
published on 5 Feb 2026
Permalink CVE-2026-24843
updated 2 weeks, 2 days ago by @LeSuisse Activity log
  • Created automatic suggestion 2 weeks, 3 days ago
  • @LeSuisse removed
    6 packages
    • ocamlPackages.melange
    • ocamlPackages.melange-json
    • ocamlPackages.melange-json-native
    • ocamlPackages_latest.melange
    • ocamlPackages_latest.melange-json
    • ocamlPackages_latest.melange-json-native
    2 weeks, 2 days ago
  • @LeSuisse accepted 2 weeks, 2 days ago
  • @LeSuisse published on GitHub 2 weeks, 2 days ago
melange QEMU runner could write files outside workspace directory

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 products

melange
  • ==>= 0.11.3, < 0.40.3

Matching in nixpkgs

Package maintainers

Upstream advisory: https://github.com/chainguard-dev/melange/security/advisories/GHSA-qxx2-7h4c-83f4
Upstream patch: https://github.com/chainguard-dev/melange/commit/6e243d0d46699f837d7c392397a694d2bcc7612b