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melange allows users to build apk packages using declarative pipelines. Starting in version 0.23.0 and prior to version 0.29.5, SBOM files generated by melange in apks had file system permissions mode 666. This potentially allows an unprivileged user to tamper with apk SBOMs on a running image, potentially confusing security scanners. An attacker could also perform a DoS under special circumstances. Version 0.29.5 fixes the issue.
Reserved 2025-07-16 | Published 2025-07-18 | Updated 2025-07-18 | Assigner GitHub_MCWE-276: Incorrect Default Permissions
github.com/...elange/security/advisories/GHSA-5662-cv6m-63wh
github.com/chainguard-dev/melange/pull/1836
github.com/chainguard-dev/melange/pull/2086
github.com/...ommit/1b272db2a0bb3441553284cc56d87236b4b64c04
github.com/...ommit/e29494b4a40a91619ec1c87a09003c6d5164cea1
github.com/chainguard-dev/melange/releases/tag/v0.23.0
github.com/chainguard-dev/melange/releases/tag/v0.29.5
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