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Linux Distros Unpatched Vulnerability : CVE-2026-52761

medium Nessus Plugin ID 326377

Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

 - 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.
 (CVE-2026-52761)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2026-52761

Plugin Details

Severity: Medium

ID: 326377

File Name: unpatched_CVE_2026_52761.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Misc.

Published: 7/11/2026

Updated: 7/11/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2026-52761

CVSS v3

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C

Vulnerability Information

CPE: p-cpe:/a:centos:centos:mod_security-mlogc, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:mod_security, p-cpe:/a:centos:centos:mod_security, cpe:/o:centos:centos:8, p-cpe:/a:redhat:enterprise_linux:mod_security-mlogc, cpe:/o:redhat:enterprise_linux:8

Required KB Items: Host/cpu, Host/local_checks_enabled, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 7/10/2026

Reference Information

CVE: CVE-2026-52761