{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "fixed": "2.9.15"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "introduced": "3.0.0"
                  },
                  {
                    "fixed": "3.0.17"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "fixed": "cce204806430e4848327aadeb9113e654631a0c1"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "range": [
                  {
                    "fixed": "edca70d853bfb725325137fa40d178beebc324fc"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "original_tag": "v2.9.15",
                "range": [
                  {
                    "fixed": "151074aca78a416764b12ba1221e61a17a6c714d"
                  }
                ],
                "source": "REFERENCES_TAG"
              },
              {
                "original_tag": "v3.0.17",
                "range": [
                  {
                    "fixed": "1925753989ccce977cdaae417b55c9726c7cf02c"
                  }
                ],
                "source": "REFERENCES_TAG"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "151074aca78a416764b12ba1221e61a17a6c714d"
            },
            {
              "introduced": "c1cd668acb820824e791ba802396c60900eae9c1"
            },
            {
              "fixed": "1925753989ccce977cdaae417b55c9726c7cf02c"
            },
            {
              "fixed": "cce204806430e4848327aadeb9113e654631a0c1"
            },
            {
              "fixed": "edca70d853bfb725325137fa40d178beebc324fc"
            }
          ],
          "repo": "https://github.com/owasp-modsecurity/modsecurity",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-2vqc-36qp-ccmw"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-295"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61813.json"
  },
  "details": "ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. Prior to 2.9.15 and 3.0.17, the HttpsClient::download function in src/utils/https_client.cc sets libcurl CURLOPT_SSL_VERIFYHOST to 1 instead of the strict value 2L. Under adversary-in-the-middle and TLS interception conditions, this non-strict setting may weaken TLS peer identity validation and increase the risk of accepting a certificate for an unintended host. End-to-end exploitation is non-trivial in typical environments. This issue is fixed in versions 2.9.15 and 3.0.17.",
  "id": "CVE-2026-61813",
  "modified": "2026-11-05T21:15:45.247770533Z",
  "published": "2026-11-05T15:48:15.062Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61813.json"
    },
    {
      "type": "FIX",
      "url": "https://github.com/owasp-modsecurity/ModSecurity/commit/cce204806430e4848327aadeb9113e654631a0c1"
    },
    {
      "type": "FIX",
      "url": "https://github.com/owasp-modsecurity/ModSecurity/commit/edca70d853bfb725325137fa40d178beebc324fc"
    },
    {
      "type": "WEB",
      "url": "https://github.com/owasp-modsecurity/ModSecurity/releases/tag/v2.9.15"
    },
    {
      "type": "WEB",
      "url": "https://github.com/owasp-modsecurity/ModSecurity/releases/tag/v3.0.17"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-2vqc-36qp-ccmw"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-61813"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ModSecurity: Incorrect libcurl TLS hostname verification setting in HttpsClient::download"
}