{"apiVersion":"1.0","identifier":"CVE-2026-54550","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. 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.","publishedAt":"2026-08-26T15:16:49","lastModifiedAt":"2026-08-26T16:16:27","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-54550","cvssScore":7.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N","epssProbability":0.00377,"riskScore":0.77,"affectedProduct":"IzPack","affectedVersions":"<=5.2.6","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-54550","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-54550","en":"https://www.redsauce.net/en/cves/CVE-2026-54550","fr":"https://www.redsauce.net/fr/cves/CVE-2026-54550","pt":"https://www.redsauce.net/pt/cves/CVE-2026-54550","de":"https://www.redsauce.net/de/cves/CVE-2026-54550","sk":"https://www.redsauce.net/sk/cves/CVE-2026-54550","el":"https://www.redsauce.net/el/cves/CVE-2026-54550"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-54550"}}