CVE-2026-42576

published 2026-05-09

CVE-2026-42576: 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…

Priority P4 32 medium 6.5 CVSS 3.1

AV N AC L PR N UI R S U C N I N A H

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.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
chainguard-dev	apko	< 1.2.7	1.2.7
chainguard.dev	apko	>= 0 < 1.2.7	1.2.7

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CWE-704