CVE-2026-25145Medium· 5.5▾ Sunlitmelange has a path traversal in license-path which allows reading files outside workspace
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
Last analysed / modified upstream
0.2%
An attacker who can influence a melange configuration file (e.g., through pull request-driven CI or build-as-a-service scenarios) could read arbitrary files from the host system. The LicensingInfos function in pkg/config/config.go reads license files specified in copyright[].license-path without validating that paths remain within the workspace directory, allowing path traversal via ../ sequences. The contents of the traversed file are embedded into the generated SBOM as license text, enabling exfiltration of sensitive data through build artifacts.
Fix: Merged in commit 2f95c9f4
Acknowledgements
melange thanks Oleh Konko (@1seal) from 1seal for discovering and reporting this issue.
chainguard.dev/melange >= 0.14.0, < 0.40.3Upgrade to a patched release:
chainguard.dev/melange 0.40.3Connected by shared product, vendor, weakness, or advisory.