{"id":"CVE-2026-61813","published":"2026-11-05T16:17:47.797","lastModified":"2026-11-05T16:17:47.797","description":"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.","cvssScore":3.7,"cvssSeverity":"LOW","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","cwes":["CWE-295"],"vendors":[],"products":[],"references":[{"url":"https://github.com/owasp-modsecurity/ModSecurity/commit/cce204806430e4848327aadeb9113e654631a0c1","tags":[]},{"url":"https://github.com/owasp-modsecurity/ModSecurity/commit/edca70d853bfb725325137fa40d178beebc324fc","tags":[]},{"url":"https://github.com/owasp-modsecurity/ModSecurity/releases/tag/v2.9.15","tags":[]},{"url":"https://github.com/owasp-modsecurity/ModSecurity/releases/tag/v3.0.17","tags":[]},{"url":"https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-2vqc-36qp-ccmw","tags":[]}],"exploitRefs":[{"url":"https://github.com/owasp-modsecurity/ModSecurity/commit/cce204806430e4848327aadeb9113e654631a0c1","tags":[]},{"url":"https://github.com/owasp-modsecurity/ModSecurity/commit/edca70d853bfb725325137fa40d178beebc324fc","tags":[]},{"url":"https://github.com/owasp-modsecurity/ModSecurity/releases/tag/v2.9.15","tags":[]},{"url":"https://github.com/owasp-modsecurity/ModSecurity/releases/tag/v3.0.17","tags":[]},{"url":"https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-2vqc-36qp-ccmw","tags":[]}],"hasPoc":true,"ai":null}