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.
History

Wed, 13 May 2026 10:00:00 +0000

Type Values Removed Values Added
First Time appeared Modsecurity
Modsecurity modsecurity
Vendors & Products Modsecurity
Modsecurity modsecurity

Tue, 12 May 2026 22:00:00 +0000

Type Values Removed Values Added
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.
Title ModSecurity: Unsigned integer underflow in @verifySSN / @verifyCPF / @verifySVNR operators
Weaknesses CWE-191
CWE-248
References
Metrics cvssV4_0

{'score': 8.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-05-12T21:40:19.031Z

Updated: 2026-05-12T21:40:19.031Z

Reserved: 2026-04-26T11:53:27.706Z

Link: CVE-2026-42268

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-12T22:16:34.337

Modified: 2026-05-12T22:16:34.337

Link: CVE-2026-42268

cve-icon Redhat

No data.