Vulnerability Description
ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. From 3.0.0 to before 3.0.15, there is an unhandled exception (std::out_of_range) caused by unsigned integer underflow in libmodsecurity3 if the user (administrator) uses a rule any of @verifySSN, @verifyCPF, or @verifySVNR. This vulnerability is fixed in 3.0.15.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Owasp | Modsecurity | >= 3.0.0, < 3.0.15 |
Related Weaknesses (CWE)
References
- https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-vwr3-7ExploitVendor Advisory
- https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-vwr3-7ExploitVendor Advisory
FAQ
What is CVE-2026-42268?
CVE-2026-42268 is a vulnerability with a CVSS score of 7.5 (HIGH). ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. From 3.0.0 to before 3.0.15, there is an unhandled exception (std::out_of_range) caused b...
How severe is CVE-2026-42268?
CVE-2026-42268 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-42268?
Check the references section above for vendor advisories and patch information. Affected products include: Owasp Modsecurity.