Apache Tomcat: APR/Native Connector crash leading to DoS

{
  "id": "69414ea067623a6458b3fef011d765d84ca186c6045ba5089016a0f293b4a4e4",
  "url": "https://osv.dev/vulnerability/CVE-2025-52434",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Apache Tomcat: APR/Native Connector crash leading to DoS",
    "summary": "Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in Apache Tomcat when using the APR/Native connector. This was particularly noticeable with client initiated closes of HTTP/2 connections. This issue affects Apache Tomcat: from 9.0.0.M1 through 9.0.106. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 through 8.5.100. Other, older, EOL versions may also be affected. Users are recommended to upgrade to version 9.0.107, which fixes the issue.",
    "evidence": "osv:CVE-2025-52434",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-52434",
      "aliases": [
        "BIT-tomcat-2025-52434",
        "CVE-2025-52434",
        "GHSA-4j3c-42xv-3f84"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/apache/tomcat",
              "type": "GIT",
              "events": [
                {
                  "introduced": "16bf392c67833ad549733b58c350ff92b5ee782a"
                },
                {
                  "fixed": "43d5ad023d2eee2ca162eded597a23afa0b92296"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "9.0.0"
                      },
                      {
                        "fixed": "9.0.107"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-52434.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:45.434684159Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2025/07/msg00009.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/52xxx/CVE-2025-52434.json",
        "https://lists.apache.org/thread/gxgh65004f25y8519coth6w7vchww030",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-52434"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-362"
        ],
        "cna_assigner": "apache",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "9.0.0.M1"
                  },
                  {
                    "last_affected": "9.0.106"
                  },
                  {
                    "introduced": "8.5.0"
                  },
                  {
                    "last_affected": "8.5.100"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/52xxx/CVE-2025-52434.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-52434",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 513487,
  "published_at": "2025-07-10T19:03:47.225+00:00"
}