VulnerabilityReceived

CVE-2026-54174

melange allows users to build apk packages using declarative pipelines.

HIGH 8.3EPSS 0.10%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.10%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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: 8.3 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS: 0.10% probability · 1th percentile
CISA KEV: Not listed
Weakness: CWE-345, CWE-354
Source: security-advisories@github.com

References

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.