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Vulnerability record · CVE-2026-54174 · published 11 September 2026

CVE-2026-54174: Insufficient verification of data authenticity vulnerability

melange allows users to build apk packages using declarative pipelines. Apko prior to version 1.2.9, corresponding to melange prior to version 0.50.4, 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. Apko version 1.2.9 and melange version 0.50.4 contain a fix.

8.3 CVSS 3.1 High EPSS 0.16% · top 96.1% CWE-345 · Insufficient verification of data authenticityCWE-354 · CWE-354 Received
8.3CVSS 3.1 base score
0.16%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
14 Sep 2026Last modified by NVD

Description

melange allows users to build apk packages using declarative pipelines. Apko prior to version 1.2.9, corresponding to melange prior to version 0.50.4, 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. Apko version 1.2.9 and melange version 0.50.4 contain a fix.

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

References

LinkTags
https://github.com/chainguard-dev/melange/security/advisories/GHSA-fpg8-7664-jc5q

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Source: NIST National Vulnerability Database (record CVE-2026-54174), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.