GHSA-m7hm-vm4x-28jf
apko `DiscoverKeys` has a panic on non-rsa jwks key that causes crash during key discovery
Quick fix
GHSA-m7hm-vm4x-28jf — chainguard.dev/apko: upgrade to the fixed version with the command below.
go get chainguard.dev/apko@v1.2.7Details
`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. Affected versions <= 0.30.34.
**Fix:** No fix available yet.
**Acknowledgements**
apko thanks Oleh Konko from [1seal](https://1seal.org/) for discovering and reporting this issue.
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Affected packages
References
- https://github.com/chainguard-dev/apko/security/advisories/GHSA-m7hm-vm4x-28jf[WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2026-42576[ADVISORY]
- https://github.com/chainguard-dev/apko/commit/6604826b19e36e9bc6e196592800fad93738f4a1[WEB]
- https://github.com/chainguard-dev/apko[PACKAGE]
- https://github.com/chainguard-dev/apko/releases/tag/v1.2.7[WEB]