CVE-2026-61813

{
  "id": "CVE-2026-61813",
  "sourceIdentifier": "[email protected]",
  "published": "2026-11-05T16:17:47.797",
  "lastModified": "2026-11-05T16:17:47.797",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "owasp-modsecurity",
          "product": "ModSecurity",
          "versions": [
            {
              "version": "< 2.9.15",
              "status": "affected"
            },
            {
              "version": ">= 3.0.0, < 3.0.17",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "baseScore": 3.7,
          "baseSeverity": "LOW",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 1.4
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-295"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/owasp-modsecurity/ModSecurity/commit/cce204806430e4848327aadeb9113e654631a0c1",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/owasp-modsecurity/ModSecurity/commit/edca70d853bfb725325137fa40d178beebc324fc",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/owasp-modsecurity/ModSecurity/releases/tag/v2.9.15",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/owasp-modsecurity/ModSecurity/releases/tag/v3.0.17",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-2vqc-36qp-ccmw",
      "source": "[email protected]"
    }
  ]
}