{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "27.1"
              },
              {
                "fixed": "27.3.4.15"
              },
              {
                "introduced": "28.0"
              },
              {
                "fixed": "28.5.0.4"
              },
              {
                "introduced": "29.0"
              },
              {
                "fixed": "29.0.4"
              }
            ],
            "source": [
              "CPE_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "9ae2ef54fc6dacb5bfbe2dc6fc6f2522d57ce1fb"
            },
            {
              "introduced": "9e6f6742c4d9e9915ee8af0dcb7d97cf1f836116"
            },
            {
              "introduced": "550d7b7898706c7822362c42e7b93120c1d1f29a"
            },
            {
              "fixed": "8def54e66dfdd41c535272794d49cc633f596d22"
            },
            {
              "fixed": "6cfd400a2379163a2802f376d3b3d02f815d34c0"
            },
            {
              "fixed": "1259612946cb36a8bf9614b289090bb32fbcbeb2"
            },
            {
              "fixed": "8a933c9c7835b06776d31d17b79b7336627d887a"
            }
          ],
          "repo": "https://github.com/erlang/otp",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-rf72-wp7h-jg3x"
  ],
  "database_specific": {
    "cna_assigner": "EEF",
    "cwe_ids": [
      "CWE-23"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47078.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "6.1"
          },
          {
            "fixed": "*"
          },
          {
            "introduced": "27.1"
          },
          {
            "fixed": "*"
          },
          {
            "introduced": "8d537f51a4262d24f3395c4148323eaca9facbbd"
          },
          {
            "fixed": "8a933c9c7835b06776d31d17b79b7336627d887a"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Relative Path Traversal vulnerability in Erlang OTP (stdlib zip module) allows writing files outside the intended extraction directory via a crafted zip archive.\n\nzip:unzip/1,2 and zip:extract/1,2 validate entry paths using zip:check_dir_level/2, which tracks directory depth as a running integer counter: .. decrements it, normal path components increment it. The caller rejects only paths where the final counter value is less than zero. A path such as ../x/y causes the counter to go negative mid-traversal then recover to zero, passing validation while resolving to a location outside the extraction directory when joined with the current working directory via add_cwd.\n\nThis vulnerability is associated with program file lib/stdlib/src/zip.erl.\n\nThis issue affects OTP from OTP 27.1 before OTP 29.0.4, OTP 28.5.0.4 and OTP 27.3.4.15, corresponding to stdlib from 6.1 before 8.0.3, 7.3.0.1 and 6.2.2.4.",
  "id": "CVE-2026-47078",
  "modified": "2026-08-01T03:32:59.585827376Z",
  "published": "2026-07-27T15:03:50.929Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://cna.erlef.org/cves/CVE-2026-47078.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/EEF-CVE-2026-47078"
    },
    {
      "type": "WEB",
      "url": "https://www.erlang.org/doc/system/versions.html#order-of-versions"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47078.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/erlang/otp/security/advisories/GHSA-rf72-wp7h-jg3x"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-47078"
    },
    {
      "type": "FIX",
      "url": "https://github.com/erlang/otp/commit/8a933c9c7835b06776d31d17b79b7336627d887a"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/erlang/otp"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Relative path traversal in zip:unzip/zip:extract via check_dir_level depth-counter bypass"
}