{"id":"BIT-modsecurity-2026-42268","summary":"ModSecurity: Unsigned integer underflow in @verifySSN / @verifyCPF / @verifySVNR operators","details":"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.","aliases":["BIT-modsecurity2-2026-42268","CVE-2026-42268","GHSA-vwr3-7x7g-7p9w"],"modified":"2026-09-08T08:48:14.105350752Z","published":"2026-05-14T08:48:16.255Z","database_specific":{"cpes":["cpe:2.3:a:trustwave:modsecurity:*:*:*:*:*:*:*:*"],"severity":"High"},"references":[{"type":"ADVISORY","url":"https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-vwr3-7x7g-7p9w"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42268"}],"affected":[{"package":{"name":"modsecurity","ecosystem":"Bitnami","purl":"pkg:bitnami/modsecurity"},"ranges":[{"type":"SEMVER","events":[{"introduced":"3.0.0"},{"fixed":"3.0.15"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/modsecurity/BIT-modsecurity-2026-42268.json"},"severity":[{"type":"CVSS_V4","score":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}],"schema_version":"1.9.0"}