CVE-2025-48866

ModSecurity (mod_security) WAF engine for Apache/Nginx/IIS is affected by CVE-2025-48866. In ModSecurity versions prior to 2.9.10, the sanitiseArg (and alias sanitizeArg) action can be abused to add an excessive number of arguments, leading to a denial of service. Astra Linux advisories confirm t...

CVE-2026-52747

Summary of CVE-2026-52747 ModSecurity (the open‑source WAF engine for Apache/IIS/Nginx) prior to version 3.0.16 contains a parsing bug in the multipart/form-data body processor. Specifically, the libmodsecurity multipart parser silently removes embedded line breaks from non-file form-field values...

CVE-2026-30923

CVE-2026-30923 affects libModSecurity3 (ModSecurity v3) where a rule using the t:hexDecode transformation can trigger a segmentation fault when inspecting a single-character query string, causing worker process crashes and denial of service. All versions prior to 3.0.15 are affected; the issue is...