CVE-2026-42576

Description

apko allows users to build and publish OCI container images built from apk packages. Prior to version 1.2.7, DiscoverKeys in pkg/apk/apk/implementation.go unconditionally type-asserts JWKS keys as *rsa.PublicKey without checking the key type. If a repository JWKS endpoint returns a non-RSA key (e.g. EC), the unchecked assertion panics and crashes apko. This affects any workflow that initializes the APK database and fetches repository keys. This issue has been patched in version 1.2.7.

References

https://github.com/chainguard-dev/apko/security/advisories/GHSA-m7hm-vm4x-28jf

https://github.com/chainguard-dev/apko/releases/tag/v1.2.7

https://github.com/chainguard-dev/apko/commit/6604826b19e36e9bc6e196592800fad93738f4a1

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-28934

Details

Source: Mitre, NVD

Named Vulnerability: GO-2026-5497Named Vulnerability: GHSA-m7hm-vm4x-28jf

Risk Information

CVSS v2

CVSS v3

EPSS