expat: integer overflow in the doProlog function

A flaw was found in expat. The vulnerability occurs due to large content in element type declarations when there is an element declaration handler present which leads to an integer overflow. This flaw allows an attacker to inject an unsigned integer, leading to a crash or a denial of service...

Important: Red Hat Security Advisory: expat security update

An update for expat is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, and Red Hat Enterprise Linux 8.6 Telecommunications Update Service. Red Hat Product Security has rated this update as...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: expat (UTSA-2025-991053)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-991053 advisory. Expat aka libexpat before 2.4.4 has an integer overflow in the doProlog function. Tenable has extracted the preceding description block directly from the Unity Linux...

F5 Networks BIG-IP : Expat vulnerability (K000158115)

The version of F5 Networks BIG-IP installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the K000158115 advisory. libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that ...

RHEL 8 : expat (RHSA-2025:22871)

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2025:22871 advisory. Expat is a C library for parsing XML documents. Security Fixes: expat: internal entity expansion CVE-2013-0340 expat: large number of colon...

CLSA-2025-1764956967 expat: Fix of CVE-2025-59375

CVE-2025-59375: fix memory amplification and add allocation tracker...

RHSA-2025:22785 Red Hat Security Advisory: expat security update

Bulletin has no description...

Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.04 / 25.10 : MAME vulnerabilities (USN-7913-1)

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.04 / 25.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7913-1 advisory. It was discovered that the stb library, included in MAME, had a heap-based buffer overflow. An attack...

expat: Integer overflow in build_model in xmlparse.c

expat libexpat is susceptible to a software flaw that causes process interruption. When processing a large number of prefixed XML attributes on a single tag can libexpat can terminate unexpectedly due to integer overflow. The highest threat from this vulnerability is to availability,...

expat: Integer overflow in addBinding in xmlparse.c

expat libexpat is susceptible to a software flaw that causes process interruption. When processing a large number of prefixed XML attributes on a single tag libexpat can terminate unexpectedly due to integer overflow. The highest threat from this vulnerability is to availability confidentiality a...

expat: internal entity expansion

expat before version 2.4.0 does not properly handle entities expansion unless an application developer uses the XMLSetEntityDeclHandler function, which allows remote attackers to cause a denial of service resource consumption, send HTTP requests to intranet servers, or read arbitrary files via a...

expat: parsing large tokens can trigger a denial of service

A flaw was found in Expat libexpat. When parsing a large token that requires multiple buffer fills to complete, Expat has to re-parse the token from start numerous times. This process may trigger excessive resource consumption, leading to a denial of service...

expat: Integer overflow in defineAttribute in xmlparse.c

expat libexpat is susceptible to a software flaw that causes process interruption. When processing a large number of prefixed XML attributes on a single tag can libexpat can terminate unexpectedly due to integer overflow. The highest threat from this vulnerability is to availability,...

expat: Integer overflow in copyString()

An integer overflow flaw was found in expat. This issue affects the encoding name parameter at the parser creation time, which is often hard-coded rather than user input, takes a value in the gigabytes to trigger, and on a 64-bit machine. This flaw can cause a denial of service...

expat: Integer overflow in doProlog in xmlparse.c

expat libexpat is susceptible to a software flaw that causes process interruption. When processing a large number of prefixed XML attributes on a single tag can libexpat can terminate unexpectedly due to integer overflow. The highest threat from this vulnerability is to availability,...

expat: Integer overflow in storeAtts in xmlparse.c

expat libexpat is susceptible to a software flaw that causes process interruption. When processing a large number of prefixed XML attributes on a single tag can libexpat can terminate unexpectedly due to integer overflow. The highest threat from this vulnerability is to availability,...

expat: Stack exhaustion in doctype parsing

A flaw was found in expat. A stack exhaustion in doctype parsing could be triggered by a file with a large number of opening braces, resulting in a denial of service...

expat: integer overflow in the doProlog function

A flaw was found in expat. The vulnerability occurs due to large content in element type declarations when there is an element declaration handler present which leads to an integer overflow. This flaw allows an attacker to inject an unsigned integer, leading to a crash or a denial of service...

expat: Integer overflow in lookup in xmlparse.c

expat libexpat is susceptible to a software flaw that causes process interruption. When processing a large number of prefixed XML attributes on a single tag can libexpat can terminate unexpectedly due to integer overflow. The highest threat from this vulnerability is to availability,...

expat: Large number of prefixed XML attributes on a single tag can crash libexpat

expat libexpat is susceptible to a software flaw that causes process interruption. When processing a large number of prefixed XML attributes on a single tag can libexpat can terminate unexpectedly due to buffer overrun. The highest threat from this vulnerability is to availability...