{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:apache:neethi:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "3.2.4"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "901c6bffad2a040925887202816ceb089347003a"
            }
          ],
          "repo": "https://github.com/apache/ws-neethi",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "apache",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91863.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "fixed": "3.2.4"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "A specially crafted WS-Policy document with deeply nested policy elements can bypass Neethi's nesting-depth limit and exhaust the thread stack, crashing the parser (denial of service).\nUsers are recommended to upgrade to version 3.2.4, which fixes this issue.",
  "id": "CVE-2026-91863",
  "modified": "2026-09-26T03:30:33.174004830Z",
  "published": "2026-09-21T11:25:26.648Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/09/18/10"
    },
    {
      "type": "WEB",
      "url": "https://repo.maven.apache.org/maven2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91863.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://lists.apache.org/thread/72kxj71lvrqqx90xxqqctvpbw0t8mpxw"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-91863"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Apache Neethi: Uncontrolled recursion while parsing crafted WS-Policy documents allows denial of service"
}