CVE-2026-30923

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Libmodsecurity is one component of the ModSecurity v3 project. A segmentation fault occurs when a rule using the t:hexDecode transformation inspects a query string parameter containing a...

CVE-2026-30923 libModSecurity3 denial of service via segfault when using t:hexDecode on single-character query strings

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Libmodsecurity is one component of the ModSecurity v3 project. A segmentation fault occurs when a rule using the t:hexDecode transformation inspects a query string parameter containing a...

EUVD-2026-27422

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Libmodsecurity is one component of the ModSecurity v3 project. A segmentation fault occurs when a rule using the t:hexDecode transformation inspects a query string parameter containing a...

CVE-2026-30923 libModSecurity3 denial of service via segfault when using t:hexDecode on single-character query strings

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Libmodsecurity is one component of the ModSecurity v3 project. A segmentation fault occurs when a rule using the t:hexDecode transformation inspects a query string parameter containing a...

CVE-2026-30923

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Libmodsecurity is one component of the ModSecurity v3 project. A segmentation fault occurs when a rule using the t:hexDecode transformation inspects a query string parameter containing a...

Modsecurity 缓冲区错误漏洞

Modsecurity is an open-source web traffic security processing library developed by OWASP ModSecurity. Versions of Modsecurity prior to 3.0.15 contained a buffer error vulnerability. This vulnerability arises from using the t:hexDecode conversion in rule checks for query string parameters containi...

PT-2026-36538

Name of the Vulnerable Software and Affected Versions ModSecurity versions 3.0.0 through 3.0.14 Description An unhandled exception std::out of range occurs in libmodsecurity3 due to an unsigned integer underflow. This issue is triggered when an administrator utilizes any of the following rules:...

PT-2026-36537

Name of the Vulnerable Software and Affected Versions libModSecurity3 versions prior to 3.0.15 Description A segmentation fault occurs when a rule using the t:hexDecode transformation inspects a query string parameter containing a single character. This allows an attacker to crash worker processe...

Exploit for CVE-2026-41940

SessionScribe - CVE-2026-41940 Detection, mitigation, and rev...

Fedora 44 : nginx / nginx-mod-brotli / nginx-mod-fancyindex / etc (2026-4de4d247a0)

The remote Fedora 44 host has packages installed that are affected by multiple vulnerabilities as referenced in the FEDORA-2026-4de4d247a0 advisory. nginx-mod-brotli: - Rebuild for 1.28.3 nginx-mod-fancyindex: - Rebuild for 1.28.3 nginx-mod-naxsi: - Rebuild for 1.28.3 nginx-mod-headers-more: -...

modsecurity3 -- multiple vulnerabilities

ModSecurity is an open source web application firewall engine. According to the upstream changelog, multiple vulnerabilities have been fixed. CVE-2026-42268: unsigned integer underflow in verify operators CVE-2026-30923: buffer overflow in hexdecode...

[SECURITY] Fedora 44 Update: nginx-mod-modsecurity-1.0.4-8.fc44

The ModSecurity-nginx connector is the connection point between nginx and libmodsecurity ModSecurity v3. Said another way, this project provides a communication channel between nginx and libmodsecurity. This connector is required to use LibModSecurity with nginx. The ModSecurity-nginx connector...

ROS-20260318-73-0001

A vulnerability in the ModSecurity web application security module exists due to insufficient input validation during URL processing. Exploitation of the vulnerability could allow an attacker acting remotely to bypass WAF rules...

Debian: Security Advisory (DLA-4488-1)

The remote host is missing an update for the Debian SPDX-FileCopyrightText: 2026 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

[SECURITY] [DLA 4488-1] modsecurity-crs security update

Debian LTS Advisory DLA-4488-1 [email protected] https://www.debian.org/lts/security/ Tobias Frost February 22, 2026 https://wiki.debian.org/LTS Package : modsecurity-crs Version : 3.3.4-1deb11u2 CVE ID : CVE-2023-38199 CVE-2026-21876 Debian Bug : 1041109 1125084 Multiple issues have be...

DLA-4488-1 modsecurity-crs - security update

Bulletin has no description...

Debian dla-4488 : modsecurity-crs - security update

The remote Debian 11 host has a package installed that is affected by multiple vulnerabilities as referenced in the dla-4488 advisory. ------------------------------------------------------------------------- Debian LTS Advisory DLA-4488-1 [email protected]...

[SECURITY] Fedora 42 Update: nginx-mod-modsecurity-1.0.4-7.fc42

The ModSecurity-nginx connector is the connection point between nginx and libmodsecurity ModSecurity v3. Said another way, this project provides a communication channel between nginx and libmodsecurity. This connector is required to use LibModSecurity with nginx. The ModSecurity-nginx connector...

[SECURITY] Fedora 43 Update: nginx-mod-modsecurity-1.0.4-7.fc43

The ModSecurity-nginx connector is the connection point between nginx and libmodsecurity ModSecurity v3. Said another way, this project provides a communication channel between nginx and libmodsecurity. This connector is required to use LibModSecurity with nginx. The ModSecurity-nginx connector...

Fedora 42 : nginx / nginx-mod-brotli / nginx-mod-fancyindex / etc (2026-0b8cc86e5b)

The remote Fedora 42 host has packages installed that are affected by a vulnerability as referenced in the FEDORA-2026-0b8cc86e5b advisory. nginx-mod-fancyindex: - Rebuild for 1.28.2 nginx-mod-headers-more: - Rebuild for 1.28.2 nginx-mod-brotli: - Rebuild for 1.28.2 nginx-mod-modsecurity: - Rebui...