PT-2026-57371 · Go · Chainguard.Dev/Apko+1

Published 2026-07-10 · Updated 2026-07-10 · CVE-2026-54174

OSV

CVSS v3.1

8.3

High

Base vector

AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

Previously, Apko verified the control section hash (.PKGINFO etc.) against the signed APKINDEX, but never verified the data section hash (the actual package files that get installed). An attacker who could compromise a mirror, poison a cache, or MITM a package fetch could substitute arbitrary file contents while the control hash check still passed.

Fix

Insufficient Verification of Data Authenticity

Weakness Enumeration

CWE-354

CWE-345

Related Identifiers

CVE-2026-54174

GHSA-FPG8-7664-JC5Q

Affected Products

Chainguard.Dev/Apko

Chainguard.Dev/Melange

References · 3

• https://osv.dev/vulnerability/GHSA-fpg8-7664-jc5q · Vendor Advisory
• https://github.com/chainguard-dev/melange · Note
• https://github.com/chainguard-dev/melange/security/advisories/GHSA-fpg8-7664-jc5q · Note