CVE-2026-42576

Published: May 9, 2026Modified: Jun 17, 2026Deferred

6.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploitability: 2.8 / Impact: 3.6

Source: security-advisories@github.com (Secondary)

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.

Related CWEs

CWE-704

Incorrect Type Conversion or Cast

The product does not correctly convert an object, resource, or structure from one type to a different type.

References (3)

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

Source: security-advisories@github.com

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

Source: security-advisories@github.com

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

Source: security-advisories@github.com

Timeline

No history available yet.