CVE-2026-61813 (GCVE-0-2026-61813)

Vulnerability from cvelistv5 – Published: 2026-11-05 15:48 – Updated: 2026-11-09 16:51
VLAI
Title
ModSecurity: Incorrect libcurl TLS hostname verification setting in HttpsClient::download
Summary
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.
Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-09 16:10 UTC
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
owasp-modsecurity ModSecurity Affected: < 2.9.15
Affected: >= 3.0.0, < 3.0.17
Create a notification for this product.
Show details on NVD website
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