En bref
- CVE-2026-24843 est une vulnérabilité ÉLEVÉE (CVSS 8.4) touchant chainguard.dev/melange, melange (chainguard).
- Probabilité d'exploitation dans les 30 prochains jours (EPSS) : 0.19%, plus élevée que 8.3% des vulnérabilités.
- Correctif : mettre à jour vers 0.40.3, 0.40.5 ou plus récent.
Description
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.
Fix: Fixed in 6e243d0d. Merged in release.
Acknowledgements
melange thanks Oleh Konko from 1seal for discovering and reporting this issue.
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.
Autres vulnérabilités de chainguard.dev/melange
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