{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "fixed": "3.3.10"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "fixed": "4.25.1"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "fixed": "4.28.0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "fixed": "4665b6d7a79a81aa8a802ef3c901d69491c009a4"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "range": [
                  {
                    "fixed": "6083611d00291e85ab7b587e96577deb53ed9cac"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "range": [
                  {
                    "fixed": "e3b612a909532dcc8d056c01ac04b31117b71505"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "ab9e8bb690c8d89567076ff3598164d0ca0151b1"
            },
            {
              "fixed": "3b89d5a05322f448b4b74b9cadc5fb05ac6915ad"
            },
            {
              "fixed": "55b09f5acfd16413e7b31041100711ceb7adc89c"
            },
            {
              "fixed": "4665b6d7a79a81aa8a802ef3c901d69491c009a4"
            },
            {
              "fixed": "6083611d00291e85ab7b587e96577deb53ed9cac"
            },
            {
              "fixed": "e3b612a909532dcc8d056c01ac04b31117b71505"
            }
          ],
          "repo": "https://github.com/coreruleset/coreruleset",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-f5qm-3h4p-8qhg"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-1333"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61619.json"
  },
  "details": "The OWASP core rule set (CRS) is a set of generic attack detection rules for use with compatible web application firewalls. Prior to versions 3.3.10, 4.25.1, and 4.28.0, regular-expression denial of service (ReDoS) affects a shared regex-assembly include used to build 12 Unix RCE detection rules in CRS v4, and the same ambiguous pattern was present in the manually-assembled regexes in 4 rules in CRS v3.3. With a single, unauthenticated, crafted request, the generated pattern drives PCRE2 past its backtracking limit. When PCRE2 exceeds that limit, the @rx operator returns an error rather than a match result, which results in detection bypass and CPU denial of service. This issue has been patched in versions 3.3.10, 4.25.1, and 4.28.0.",
  "id": "CVE-2026-61619",
  "modified": "2026-11-13T02:30:58.374752491Z",
  "published": "2026-11-11T17:32:41.641Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61619.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/coreruleset/coreruleset/security/advisories/GHSA-f5qm-3h4p-8qhg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-61619"
    },
    {
      "type": "FIX",
      "url": "https://github.com/coreruleset/coreruleset/commit/4665b6d7a79a81aa8a802ef3c901d69491c009a4"
    },
    {
      "type": "FIX",
      "url": "https://github.com/coreruleset/coreruleset/commit/6083611d00291e85ab7b587e96577deb53ed9cac"
    },
    {
      "type": "FIX",
      "url": "https://github.com/coreruleset/coreruleset/commit/e3b612a909532dcc8d056c01ac04b31117b71505"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "OWASP CRS: ReDoS in shared unix-shell-evasion regex-assembly include (12 RCE rules) - PCRE2 backtracking-limit exhaustion causes detection bypass and CPU DoS"
}