GHSA-fpg8-7664-jc5q

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    GHSA-fpg8-7664-jc5q

    Published: 10 Jul 2026Last Modified: 10 Sept 2026

    Summary: melange: Incomplete package integrity verification allows data section substitution

    Details: 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.

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

    Affected packages

    Package

    Name: chainguard.dev/apko

    Purl: pkg:golang/chainguard.dev/apko

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -1.2.9

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    GHSA-fpg8-7664-jc5q | CVE-DB