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CVE-2026-52761

nvd nist
Published: Jul 10, 2026Modified: Jul 14, 2026

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5.3
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Exploitability: 3.9 / Impact: 1.4
Source: NVD

Description

ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. From 3.0.0 through 3.0.15, the t:utf8toUnicode transformation in src/actions/transformations/utf8_to_unicode.cc produces wrong output on i386 architecture because snprintf uses sizeof on a char pointer rather than the length of the unicode buffer, allowing rules that use this transformation to be bypassed on i386 architecture. This issue is fixed in version 3.0.16.

Affected (1)

Products: Owasp: Modsecurity
Owasp
1 product
Modsecurity
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Modsecurity
From 3.0.0 to 3.0.15

Related CWEs

CWE-467
Use of sizeof() on a Pointer Type
The code calls sizeof() on a malloced pointer type, which always returns the wordsize/8. This can produce an unexpected result if the programmer intended to determine how much memory has been allocated.

References (3)

Source: security-advisories@github.com
Patch
Source: security-advisories@github.com
ProductRelease Notes
Source: security-advisories@github.com
Vendor Advisory

Timeline

No history available yet.