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      <title>CVE-2026-54174 — melange: Incomplete package integrity verification allows data section substitution</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-54174</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; chainguard-dev melange, chainguard-dev apko&lt;/p&gt;
&lt;p&gt;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.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; chainguard-dev melange, chainguard-dev apko&lt;/p&gt;
&lt;p&gt;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.&lt;/p&gt;</content:encoded>
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