CVE-2026-42268

Name	CVE-2026-42268
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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
modsecurity (PTS)	bullseye	3.0.4-2	vulnerable
	bookworm	3.0.9-1+deb12u1	vulnerable
	trixie	3.0.14-1	vulnerable
	forky, sid	3.0.15-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
modsecurity	source	(unstable)	3.0.15-1

Notes

[trixie] - modsecurity <no-dsa> (Proposed via point release update)
[bookworm] - modsecurity <no-dsa> (Proposed via point release update)
[bullseye] - modsecurity <postponed> (Minor issue, DoS)
https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-vwr3-7x7g-7p9w