CVE-2026-50219

libexpat before 2.8.2 lacks handler call depth tracking for calls to XMLGetBuffer, XMLParse, XMLParseBuffer, XMLParserFree, or XMLParserReset from within handlers in cases of a policy violation. Thus, a use-after-free can occur,...

libexpat: denial of service via crafted XML input

A flaw was found in libexpat. When processing a specially crafted XML input containing a specific pattern of attributes, the parsing time increases quadratically due to checks for attribute name collisions. This consumes excessive CPU resources and eventually results in a denial of service...

libexpat: denial of service via crafted XML input

A flaw was found in libexpat. When processing a specially crafted XML input containing a specific pattern of attributes, the parsing time increases quadratically due to checks for attribute name collisions. This consumes excessive CPU resources and eventually results in a denial of service...

OESA-2026-2499 expat security update

expat is a stream-oriented XML parser library written in C. expat excels with files too large to fit RAM, and where performance and flexibility are crucial. Security Fixes: libexpat before version 2.7.6 uses insufficient entropy, allowing attackers to cause hash flooding via a crafted XML...

RockyLinux 9 : python3.12 (RLSA-2026:19177)

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:19177 advisory. expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing CVE-2025-59375...

Security Bulletin: Multiple security vulnerabilities are addressed with Cloud Pak foundational services 4.17.0 shipped with IBM Cloud Pak for Business Automation iFixes for April 2026

Summary IBM Cloud Pak for Business Automation includes IBM Cloud Pak foundational services. IBM Cloud Pak for Business Automation April 2026 security fixes update this dependency beyond 4.17.0 to address security vulnerabilities. Vulnerability Details CVEID:CVE-2022-23990 DESCRIPTION: Expat aka...

Amazon Linux 2023 : firefox (ALAS2023-2026-1725)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1725 advisory. In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via moderately sized crafted XML input. CVE-2026-45186 Use-after-free in th...

Amazon Linux 2 : firefox, --advisory ALAS2FIREFOX-2026-059 (ALASFIREFOX-2026-059)

The version of firefox installed on the remote host is prior to 140.10.1-1. It is, therefore, affected by a vulnerability as referenced in the ALAS2FIREFOX-2026-059 advisory. libexpat before 2.7.6 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document. CVE-2026-410...

Amazon Linux 2 : thunderbird, --advisory ALAS2-2026-3306 (ALAS-2026-3306)

The version of thunderbird installed on the remote host is prior to 140.10.1-1. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3306 advisory. libexpat before 2.7.6 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document. CVE-2026-41080...

Low: thunderbird

Issue Overview: libexpat before 2.7.6 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document. CVE-2026-41080 Affected Packages: thunderbird Note: This advisory is applicable to Amazon Linux 2 AL2 Core repository. Visit this FAQ section for the difference between AL...

Low: firefox

Issue Overview: libexpat before 2.7.6 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document. CVE-2026-41080 Affected Packages: firefox Note: This advisory is applicable to Amazon Linux 2 - Firefox Extra. Visit this page to learn more about Amazon Linux 2 AL2 Extra...

ROS-20260526-73-0003

A vulnerability in the libexpat XML file parsing library is related to null pointer dereferencing. Exploitation of the vulnerability could allow an attacker to cause a denial of service...

Important: thunderbird

Issue Overview: In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via moderately sized crafted XML input. CVE-2026-45186 Use-after-free in the DOM: Networking component. This vulnerability was fixed in Firefox 150.0.2, Firefox ESR...

Important: firefox

Issue Overview: In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via moderately sized crafted XML input. CVE-2026-45186 Use-after-free in the DOM: Networking component. This vulnerability was fixed in Firefox 150.0.2, Firefox ESR...

TencentOS Server 3: python3.12 (TSSA-2026:0389)

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:0389 advisory. Package updates are available for TencentOS Server 3 that fix the following vulnerabilities...

ROS-20260526-73-0004

A vulnerability in the libexpat XML file parsing library is related to unrestricted resource allocation. Exploitation of the vulnerability could allow an attacker acting remotely to cause a denial of service...

Important: firefox

Issue Overview: In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via moderately sized crafted XML input. CVE-2026-45186 Use-after-free in the DOM: Networking component. This vulnerability was fixed in Firefox 150.0.2, Firefox ESR...

OESA-2026-2431 expat security update

expat is a stream-oriented XML parser library written in C. expat excels with files too large to fit RAM, and where performance and flexibility are crucial. Security Fixes: In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via...

OESA-2026-2430 expat security update

expat is a stream-oriented XML parser library written in C. expat excels with files too large to fit RAM, and where performance and flexibility are crucial. Security Fixes: In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via...

Astra Linux - уязвимость в firefox, expat, libxmltok, thunderbird

The libexpat library before version 2.4.9 has a use-after-free issue in the doContent function of the xmlparse.c file...