{"cve":"CVE-2026-54174","nvd":{"published":"2026-09-11T21:17:11.403","modified":"2026-09-30T19:57:08.043","status":"Deferred","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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","score":8.3},"cwes":["CWE-345","CWE-354"],"references":["https://github.com/chainguard-dev/melange/security/advisories/GHSA-fpg8-7664-jc5q"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:53:43.293028046+00:00"},"epss":{"cve":"CVE-2026-54174","score":0.00155,"percentile":0.04579,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-fpg8-7664-jc5q","url":"https://osv.dev/vulnerability/GHSA-fpg8-7664-jc5q","summary":"melange: Incomplete package integrity verification allows data section substitution","modified":"2026-09-10T03:50:51.801246105Z","packages":[{"ecosystem":"Go","name":"chainguard.dev/apko","purl":"pkg:golang/chainguard.dev/apko","ranges":["<1.2.9"],"fixed":["1.2.9"]},{"ecosystem":"Go","name":"chainguard.dev/melange","purl":"pkg:golang/chainguard.dev/melange","ranges":["<0.50.4"],"fixed":["0.50.4"]}]},{"id":"GO-2026-5968","url":"https://osv.dev/vulnerability/GO-2026-5968","summary":"melange: Incomplete package integrity verification allows data section substitution in chainguard.dev/apko","modified":"2026-07-22T20:59:39.183404011Z","packages":[{"ecosystem":"Go","name":"chainguard.dev/apko","purl":"pkg:golang/chainguard.dev/apko","ranges":["<1.2.9"],"fixed":["1.2.9"]},{"ecosystem":"Go","name":"chainguard.dev/melange","purl":"pkg:golang/chainguard.dev/melange","ranges":["<0.50.4"],"fixed":["0.50.4"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}