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CVE-2026-42576 Detail

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/chainguard-dev/apko/commit/6604826b19e36e9bc6e196592800fad93738f4a1 GitHub, Inc.
https://github.com/chainguard-dev/apko/releases/tag/v1.2.7 GitHub, Inc.
https://github.com/chainguard-dev/apko/security/advisories/GHSA-m7hm-vm4x-28jf GitHub, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-704 Incorrect Type Conversion or Cast GitHub, Inc.  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-42576
NVD Published Date:
05/09/2026
NVD Last Modified:
05/09/2026
Source:
GitHub, Inc.