Product:

Modsecurity

(Trustwave)
Repositories https://github.com/SpiderLabs/ModSecurity
#Vulnerabilities 13
Date Id Summary Products Score Patch Annotated
2021-12-07 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. Debian_linux, Nginx_modsecurity_waf, Http_server, Zfs_storage_appliance_kit, Modsecurity, Modsecurity 7.5
2023-01-20 CVE-2022-48279 In ModSecurity before 2.9.6 and 3.x before 3.0.8, HTTP multipart requests were incorrectly parsed and could bypass the Web Application Firewall. NOTE: this is related to CVE-2022-39956 but can be considered independent changes to the ModSecurity (C language) codebase. Debian_linux, Modsecurity, Modsecurity 7.5
2025-05-21 CVE-2025-47947 ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. Versions up to and including 2.9.8 are vulnerable to denial of service in one special case (in stable released versions): when the payload's content type is `application/json`, and there is at least one rule which does a `sanitiseMatchedBytes` action. A patch is available at pull request 3389 and expected to be part of version 2.9.9. No known workarounds are available. Modsecurity N/A