CVE-2026-54174
melange: Incomplete package integrity verification allows data section substitution
8.3
HIGH
CVSS 3.1
Description
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.
How to fix CVE-2026-54174
To remediate CVE-2026-54174, upgrade the affected package to a fixed version below.
- Go/chainguard.dev/apko—upgrade to 1.2.9 or later
- —upgrade to 0.50.4 or later
Is CVE-2026-54174 being exploited?
No exploitation signal available. Neither CISA KEV nor a current EPSS score has been published for CVE-2026-54174.
Affected packages (2)
- from 0, < 1.2.9
- from 0, < 0.50.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.3 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H |