What is CVE-2026-42575?

CVE-2026-42575 is a high-severity vulnerability in Chainguard-dev Apko, classified under Insufficient Verification of Data Authenticity. CVSS score: 7.5/10. Published 2026-05-09.

How severe is CVE-2026-42575?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Chainguard-dev Apko

CVE-2026-42575

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 recor…

EPSS: 0.000 (4.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

Chainguard-dev Apko — versions < 1.2.7

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-42575?: CVE-2026-42575 is a high-severity vulnerability in Chainguard-dev Apko, classified under Insufficient Verification of Data Authenticity. CVSS score: 7.5/10. Published 2026-05-09.
How severe is CVE-2026-42575?: High severity. CVSS v3 base score is 7.5 out of 10.