Vulnerabilities
Products Security index
Vulnerabilities
CVE-2025-47947
ModSecurity Has Possible DoS Vulnerability
CVE-2024-46292
mod_security: denial of service via name paramter
CVE-2023-24021
modsecurity: lacking the complete content in FILES_TMP_CONTENT leads to web application firewall bypass
CVE-2022-48279
mod_security: incorrect parsing of HTTP multipart requests leads to web application firewall bypass
CVE-2021-42717
ModSecurity 3.x through 3.0.5 mishandles excessively nested JSON objects. Crafted JSON objects with nesting tens-of-thousands deep could result in the web server being unable to service legitimate requests. Even a moderately large (e.g., 300KB) HTTP request can occupy one of the limited NGINX worker processes for minutes and consume almost all of the available CPU on the machine. Modsecurity 2 is similarly vulnerable: the affected versions include 2.8.0 through 2.9.4.
