CVE-2026-42575

HighCVSS 7.5/10Last modified Jul 24, 2026

Description

apko allows users to build and publish OCI container images built from apk packages. Prior to version 1.2.7, apko verifies the signature on APKINDEX.tar.gz but never compares individually downloaded .apk packages against the checksum recorded in the signed index. The checksum is parsed and available via ChecksumString(), and the downloaded package control hash is computed, but the two values are never compared in getPackageImpl(). Mismatched packages are silently accepted. An attacker who can substitute download responses (compromised mirror, HTTP repository, poisoned CDN cache) can install arbitrary packages into built images. This issue has been patched in version 1.2.7.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-345CWE-494

Affected software

No affected versions have been published.

Timeline

Published
May 9, 2026
Last modified
Jul 24, 2026
NVD status
Deferred

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CVE-2026-42575: High severity, CVSS 7.5 | Vulnix