GHSA-m7hm-vm4x-28jfMediumCVSS 6.5

apko `DiscoverKeys` has a panic on non-rsa jwks key that causes crash during key discovery

Published
May 4, 2026
Last Modified
May 13, 2026

🔗 CVE IDs covered (1)

CVE-2026-42576 →

📋 Description

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 for discovering and reporting this issue.

🎯 Affected products1

  • go/chainguard.dev/apko:< 1.2.7

🔗 References (5)