CVE-2026-52761

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. From 3.0.0 through 3.0.15, the t:utf8toUnicode transformation in src/actions/transformations/utf8tounicode.cc produces wrong output on i386 architecture because snprintf uses sizeof on a...

CVE-2026-52761 ModSecurity: Transformation utf8toUnicode produces wrong output on i386 architecture

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. From 3.0.0 through 3.0.15, the t:utf8toUnicode transformation in src/actions/transformations/utf8tounicode.cc produces wrong output on i386 architecture because snprintf uses sizeof on a...

CVE-2026-52761

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. From 3.0.0 through 3.0.15, the t:utf8toUnicode transformation in src/actions/transformations/utf8tounicode.cc produces wrong output on i386 architecture because snprintf uses sizeof on a...

CVE-2026-52761 ModSecurity: Transformation utf8toUnicode produces wrong output on i386 architecture

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. From 3.0.0 through 3.0.15, the t:utf8toUnicode transformation in src/actions/transformations/utf8tounicode.cc produces wrong output on i386 architecture because snprintf uses sizeof on a...

CVE-2026-52761

Affected software: ModSecurity WAF for Apache/IIS/Nginx. A vulnerability in the t:utf8toUnicode transformation (src/actions/transformations/utf8_to_unicode.cc) in 3.0.0–3.0.15, where snprintf uses sizeof on a char pointer instead of the unicode buffer length on i386, can allow bypassing rules tha...