{
    "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": "2026-08-26T14:24:06.879Z"
    },
    "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"
            }
        }
    }
}