CVE-2025-54571: Unchecked Return Value

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. In versions 2.9.11 and below, an attacker can override the HTTP response’s Content-Type, which could lead to several issues depending on the HTTP scenario. For example, we have demonstrate...

CVE-2025-54571

CVE-2025-54571 affects ModSecurity (WAF engine for Apache/IIS/Nginx). In versions 2.9.11 and earlier, an attacker could override the HTTP response Content-Type, enabling issues such as XSS and arbitrary script-source disclosure. The vulnerability is fixed in ModSecurity 2.9.12. Remediation: upgra...

CVE-2025-54571 ModSecurity's Insufficient Return Value Handling can Lead to XSS and Source Code Disclosure

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. In versions 2.9.11 and below, an attacker can override the HTTP response’s Content-Type, which could lead to several issues depending on the HTTP scenario. For example, we have demonstrate...

CVE-2025-54571

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. In versions 2.9.11 and below, an attacker can override the HTTP response’s Content-Type, which could lead to several issues depending on the HTTP scenario. For example, we have demonstrate...

CVE-2025-54571 ModSecurity's Insufficient Return Value Handling can Lead to XSS and Source Code Disclosure

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. In versions 2.9.11 and below, an attacker can override the HTTP response’s Content-Type, which could lead to several issues depending on the HTTP scenario. For example, we have demonstrate...

CVE-2025-54571 ModSecurity's Insufficient Return Value Handling can Lead to XSS and Source Code Disclosure

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. In versions 2.9.11 and below, an attacker can override the HTTP response’s Content-Type, which could lead to several issues depending on the HTTP scenario. For example, we have demonstrate...

mod_security: ModSecurity Denial of Service Vulnerability

A denial of service flaw was found in ModSecurity. This vulnerability is present in the sanitiseArg/sanitizeArg function can be overloaded with a large number of arguments which will lead to excessive memory usage when processing json values. This may lead to a denial of service in the affected w...

mod_security security update

2.9.6-2.1 - Resolves: RHEL-100102 - CVE-2025-48866 modsecurity: ModSecurity Denial of Service Vulnerability...

PT-2025-32001

Name of the Vulnerable Software and Affected Versions ModSecurity versions 2.9.11 and below Description ModSecurity is a web application firewall engine for Apache, IIS, and Nginx. An attacker can override the HTTP response’s Content-Type, potentially leading to issues such as cross-site scriptin...

RHEL 9 : mod_security (RHSA-2025:12838)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2025:12838 advisory. ModSecurity is an open source intrusion detection and prevention engine for web applications. Security Fixes: modsecurity: ModSecurity Denial of...

Oracle Linux 9 : mod_ (ELSA-2025-12838)

The remote Oracle Linux 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2025-12838 advisory. 2.9.6-2.1 - Resolves: RHEL-100102 - CVE-2025-48866 modsecurity: ModSecurity Denial of Service Vulnerability Tenable has extracted the preceding description blo...

OESA-2025-1755 mod_security security update

Security Fixes: A vulnerability was found in OWASP ModSecurity 2.9.8/2.9.10 and classified as critical.Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary...

OESA-2025-1751 mod_security security update

Security Fixes: A vulnerability was found in OWASP ModSecurity 2.9.8/2.9.10 and classified as critical.Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary...

OESA-2025-1752 mod_security security update

Security Fixes: A vulnerability was found in OWASP ModSecurity 2.9.8/2.9.10 and classified as critical.Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary...

OESA-2025-1750 mod_security security update

Security Fixes: A vulnerability was found in OWASP ModSecurity up to 2.9.9. It has been declared as critical.The manipulation of the argument sanitiseArg/sanitizeArg with an unknown input leads to a unknown weakness. The CWE definition for the vulnerability is CWE-1050. The product has a loop bod...

FreeBSD : ModSecurity -- empty XML tag causes segmentation fault (c0f3f54c-5bc4-11f0-834f-b42e991fc52e)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the c0f3f54c-5bc4-11f0-834f-b42e991fc52e advisory. [email protected] reports: ModSecurity is an open source, cross platform web application...

TencentOS Server 4: mod_security (TSSA-2025:0499)

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2025:0499 advisory. Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:...

TencentOS Server 3: mod_security (TSSA-2025:0491)

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2025:0491 advisory. Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:...

BIT-MODSECURITY2-2025-52891 ModSecurity empty XML tag causes segmentation fault

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. In versions 2.9.8 to before 2.9.11, an empty XML tag can cause a segmentation fault. If SecParseXmlIntoArgs is set to On or OnlyArgs, and the request type is application/xml, and at least...

BIT-MODSECURITY-2025-52891 ModSecurity empty XML tag causes segmentation fault

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. In versions 2.9.8 to before 2.9.11, an empty XML tag can cause a segmentation fault. If SecParseXmlIntoArgs is set to On or OnlyArgs, and the request type is application/xml, and at least...