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.
Published: 2026-05-12
Score: 8.2 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
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Remediation

No vendor fix or workaround currently provided.

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History

Thu, 14 May 2026 15:00:00 +0000

Type Values Removed Values Added
First Time appeared Owasp
Owasp modsecurity
CPEs cpe:2.3:a:owasp:modsecurity:*:*:*:*:*:*:*:*
Vendors & Products Owasp
Owasp modsecurity
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Thu, 14 May 2026 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


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'}


Subscriptions

Modsecurity Modsecurity
Owasp Modsecurity
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-14T12:34:20.932Z

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

Link: CVE-2026-42268

cve-icon Vulnrichment

Updated: 2026-05-14T12:34:11.396Z

cve-icon NVD

Status : Analyzed

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

Modified: 2026-05-14T14:49:57.730

Link: CVE-2026-42268

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-13T09:45:09Z

Weaknesses