CVE-2026-61813
Published:September 30, 2026
Updated:October 01, 2026
OWASP ModSecurity sets libcurl CURLOPT_SSL_VERIFYHOST to 1 instead of 2 when downloading remote content (SecRemoteRules and similar; v3 HttpsClient::download, v2 msc_remote_download_content), weakening TLS hostname verification. Affects v2 2.9.0-rc1 through 2.9.14 (fixed 2.9.15) and v3 3.0.0-rc1 through 3.0.16 (fixed 3.0.17).
Affected Packages
https://github.com/owasp-modsecurity/ModSecurity.git (GITHUB):
Affected version(s) >=v2.9.0-rc1 <v2.9.15Fix Suggestion:
Update to version v2.9.15https://github.com/owasp-modsecurity/ModSecurity.git (GITHUB):
Affected version(s) >=v3.0.0-rc1 <v3.0.17Fix Suggestion:
Update to version v3.0.17Related Resources (2)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
3.7
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Improper Certificate Validation