{"api_version":"1","generated_at":"2026-10-22T16:18:26+00:00","cve":"CVE-2026-54550","urls":{"html":"https://cve.report/CVE-2026-54550","api":"https://cve.report/api/cve/CVE-2026-54550.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-54550","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-54550"},"summary":{"title":"IzPack: Path Traversal in UnpackerBase allows writing files outside the installation directory via malicious pack entries","description":"IzPack is a widely used tool for packaging applications on the Java platform as cross-platform installers. In 5.2.6 and earlier, UnpackerBase.unpack() in izpack-installer/src/main/java/com/izforge/izpack/installer/unpacker/UnpackerBase.java obtains an attacker-controlled PackFile targetPath, passes it through IoHelper.translatePath(), which only converts separators, and constructs a File without normalizing parent-directory segments or enforcing destination containment. 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In 5.2.6 and earlier, UnpackerBase.unpack() in izpack-installer/src/main/java/com/izforge/izpack/installer/unpacker/UnpackerBase.java obtains an attacker-controlled PackFile targetPath, passes it through IoHelper.translatePath(), which only converts separators, and constructs a File without normalizing parent-directory segments or enforcing destination containment. A malicious installer pack entry containing ../ sequences can therefore write outside the intended installation directory to startup folders, executable search paths, or other locations accessible with the victim's privileges when the victim runs the installer.","Type":"Description","Title":"IzPack: Path Traversal in UnpackerBase allows writing files outs"}]}}}