Vulnerability Details CVE-2026-42268
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 16.7%
CVSS Severity
CVSS v3 Score 7.5
References
Products affected by CVE-2026-42268
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cpe:2.3:a:owasp:modsecurity:3.0.0
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cpe:2.3:a:owasp:modsecurity:3.0.1
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cpe:2.3:a:owasp:modsecurity:3.0.10
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cpe:2.3:a:owasp:modsecurity:3.0.11
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cpe:2.3:a:owasp:modsecurity:3.0.12
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cpe:2.3:a:owasp:modsecurity:3.0.13
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cpe:2.3:a:owasp:modsecurity:3.0.14
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cpe:2.3:a:owasp:modsecurity:3.0.2
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cpe:2.3:a:owasp:modsecurity:3.0.3
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cpe:2.3:a:owasp:modsecurity:3.0.4
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cpe:2.3:a:owasp:modsecurity:3.0.5
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cpe:2.3:a:owasp:modsecurity:3.0.6
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cpe:2.3:a:owasp:modsecurity:3.0.8
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cpe:2.3:a:owasp:modsecurity:3.0.9