{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:apktool:apktool:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "3.0.0"
              },
              {
                "fixed": "3.0.2"
              }
            ],
            "source": [
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "f770b39e425af4fa6ac4ca1e9ea6c4824339c6d3"
            },
            {
              "fixed": "1c1d15b070c2138d958fa8b685d430c49c4bb117"
            },
            {
              "fixed": "e10a0450c7afcd9462c0b76bcbff0e7428b92bdd"
            }
          ],
          "repo": "https://github.com/ibotpeaches/apktool",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-m8mh-x359-vm8m"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-22"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39973.json"
  },
  "details": "Apktool is a tool for reverse engineering Android APK files. In versions 3.0.0 and 3.0.1, a path traversal vulnerability in `brut/androlib/res/decoder/ResFileDecoder.java` allows a maliciously crafted APK to write arbitrary files to the filesystem during standard decoding (`apktool d`). This is a security regression introduced in commit e10a045 (PR #4041, December 12, 2025), which removed the `BrutIO.sanitizePath()` call that previously prevented path traversal in resource file output paths. An attacker can embed `../` sequences in the `resources.arsc` Type String Pool to escape the output directory and write files to arbitrary locations, including `~/.ssh/config`, `~/.bashrc`, or Windows Startup folders, escalating to RCE. The fix in version 3.0.2 re-introduces `BrutIO.sanitizePath()` in `ResFileDecoder.java` before file write operations.",
  "id": "CVE-2026-39973",
  "modified": "2026-07-15T01:49:10.377735176Z",
  "published": "2026-04-21T01:35:22.396Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/iBotPeaches/Apktool/releases/tag/v3.0.2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39973.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/iBotPeaches/Apktool/security/advisories/GHSA-m8mh-x359-vm8m"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39973"
    },
    {
      "type": "FIX",
      "url": "https://github.com/iBotPeaches/Apktool/commit/e10a0450c7afcd9462c0b76bcbff0e7428b92bdd#diff-cd531ebe1014bfd18185bf21585ca5cdb16fbcb07703ebc47949a1b4e4e36bc3"
    },
    {
      "type": "FIX",
      "url": "https://github.com/iBotPeaches/Apktool/pull/4041"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Apktool: Path Traversal to Arbitrary File Write"
}