What’s Vulnerable › Vulnerabilities
CVE-2026-54174: melange: Incomplete package integrity verification allows data section substitution
- Severity: high (CVSS 8.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-11 · updated 2026-09-30
- Weakness: CWE-345
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.
Affected products
- chainguard-dev apko: before 1.2.9
- chainguard-dev melange: before 0.50.4
References
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