Description
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/utf8_to_unicode.cc produces wrong output on i386 architecture because snprintf uses sizeof on a char pointer rather than the length of the unicode buffer, allowing rules that use this transformation to be bypassed on i386 architecture. This issue is fixed in version 3.0.16.
Severity (CVSS)
| Base score | 5.8 |
|---|---|
| Severity | Medium |
| Version | CVSS 3.1 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N |
| Provided by | CNA |
Weaknesses
- CWE-467 — CWE-467: Use of sizeof() on a Pointer Type
Affected products
| Vendor | Product | Versions |
|---|---|---|
| owasp-modsecurity | ModSecurity | >= 3.0.0, < 3.0.16 |
References
- https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-qjgm-7gp4-f8qq (x_refsource_CONFIRM)
- https://github.com/owasp-modsecurity/ModSecurity/commit/edcd010814e234d46e2ec55a0f1078ff9d3032e4 (x_refsource_MISC)
- https://github.com/owasp-modsecurity/ModSecurity/releases/tag/v3.0.16 (x_refsource_MISC)
Generated from the official CVE List on 11 Jul 2026 07:02 UTC.