{"affected":[{"product":"ModSecurity","source":"CNA: GitHub_M","vendor":"owasp-modsecurity","versions":[{"status":"affected","version":"< 2.9.15"},{"status":"affected","version":">= 3.0.0, < 3.0.17"}]}],"cveId":"CVE-2026-61813","cwes":["CWE-295"],"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.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":3.7,"severity":"low","source":"CNA: GitHub_M","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"}],"modifiedAt":1793893695062,"publishedAt":1793893695062,"references":[{"source":"CNA: GitHub_M","tags":["x_refsource_CONFIRM"],"url":"https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-2vqc-36qp-ccmw"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/owasp-modsecurity/ModSecurity/commit/cce204806430e4848327aadeb9113e654631a0c1"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/owasp-modsecurity/ModSecurity/commit/edca70d853bfb725325137fa40d178beebc324fc"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/owasp-modsecurity/ModSecurity/releases/tag/v2.9.15"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/owasp-modsecurity/ModSecurity/releases/tag/v3.0.17"}],"remediation":[],"revision":"5bb9e9a9a34fb0672088f8097dc8993ed9bb2c80b61ee32cf62c1f8e02a88f79","sources":[{"modifiedAt":1793893695062,"name":"CNA: GitHub_M","retrievedAt":1793895376276,"url":"https://www.cve.org/CVERecord?id=CVE-2026-61813"}],"ssvc":null,"status":"published","title":"ModSecurity: Incorrect libcurl TLS hostname verification setting in HttpsClient::download","updatedAt":1793895376276}