{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-54550", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-15T19:04:14.456Z", "datePublished": "2026-08-26T14:24:06.879Z", "dateUpdated": "2026-08-26T15:37:00.917Z"}, "containers": {"cna": {"title": "IzPack: Path Traversal in UnpackerBase allows writing files outside the installation directory via malicious pack entries", "problemTypes": [{"descriptions": [{"cweId": "CWE-22", "lang": "en", "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/izpack/izpack/security/advisories/GHSA-f63g-88cj-hjf9", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/izpack/izpack/security/advisories/GHSA-f63g-88cj-hjf9"}, {"name": "https://github.com/izpack/izpack/pull/1193", "tags": ["x_refsource_MISC"], "url": "https://github.com/izpack/izpack/pull/1193"}, {"name": "https://github.com/izpack/izpack/commit/4233ba38d0f1825f9cf3e0204e5261a5498e29d8", "tags": ["x_refsource_MISC"], "url": "https://github.com/izpack/izpack/commit/4233ba38d0f1825f9cf3e0204e5261a5498e29d8"}, {"name": "https://github.com/izpack/izpack/commit/8b7c6792c4fe85e3b1759c106aae39b904848466", "tags": ["x_refsource_MISC"], "url": "https://github.com/izpack/izpack/commit/8b7c6792c4fe85e3b1759c106aae39b904848466"}], "affected": [{"vendor": "izpack", "product": "izpack", "versions": [{"version": "<= 5.2.6", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-26T14:24:06.879Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-f63g-88cj-hjf9", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/izpack/izpack/security/advisories/GHSA-f63g-88cj-hjf9", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-26T15:36:54.267935Z", "id": "CVE-2026-54550", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-26T15:37:00.917Z"}}]}}

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{}