CVE-2025-66382

In libexpat through 2.7.3, a crafted file with an approximate size of 2 MiB can lead to dozens of seconds of processing time...

firefox: thunderbird: expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing

A memory amplification vulnerability in libexpat allows attackers to trigger excessive dynamic memory allocations by submitting specially crafted XML input. A small input 250 KiB can cause the parser to allocate hundreds of megabytes, leading to denial-of-service DoS through memory exhaustion...

mingw-expat security update

An update is available for mingw-expat. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list Expat is a C library for parsing XML documents. The mingw-expat packages...

libexpat: expat: Improper Restriction of XML Entity Expansion Depth in libexpat

A stack overflow vulnerability exists in the libexpat library due to the way it handles recursive entity expansion in XML documents. When parsing an XML document with deeply nested entity references, libexpat can be forced to recurse indefinitely, exhausting the stack space and causing a crash...

libexpat: expat: Improper Restriction of XML Entity Expansion Depth in libexpat

A stack overflow vulnerability exists in the libexpat library due to the way it handles recursive entity expansion in XML documents. When parsing an XML document with deeply nested entity references, libexpat can be forced to recurse indefinitely, exhausting the stack space and causing a crash...

libexpat: expat: Improper Restriction of XML Entity Expansion Depth in libexpat

A stack overflow vulnerability exists in the libexpat library due to the way it handles recursive entity expansion in XML documents. When parsing an XML document with deeply nested entity references, libexpat can be forced to recurse indefinitely, exhausting the stack space and causing a crash...

firefox: thunderbird: expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing

A memory amplification vulnerability in libexpat allows attackers to trigger excessive dynamic memory allocations by submitting specially crafted XML input. A small input 250 KiB can cause the parser to allocate hundreds of megabytes, leading to denial-of-service DoS through memory exhaustion...

RHEL 9 : expat (RHSA-2025:22033)

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2025:22033 advisory. Expat is a C library for parsing XML documents. Security Fixes: libexpat: expat: Improper Restriction of XML Entity Expansion Depth in...

Unity Linux 20.1070a Security Update: expat (UTSA-2025-990945)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-990945 advisory. libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing. Tenable has extracted...

Important: mingw-expat security update

Expat is a C library for parsing XML documents. The mingw-expat packages provide a port of the Expat library for MinGW. Security Fixes: expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing CVE-2025-59375 For more...

Alibaba Cloud Linux 3 : 0187: expat (ALINUX3-SA-2025:0187)

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by a vulnerability as referenced in the ALINUX3-SA-2025:0187 advisory. Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities: CVE-2025-59375: libexpat in Expat before 2.7.2 allo...

TencentOS Server 4: expat (TSSA-2025:0629)

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-2025:0629 advisory. Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:...

AlmaLinux 8 : expat (ALSA-2025:21776)

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2025:21776 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 Tenable ha...

TencentOS Server 3: mingw-expat (TSSA-2022:0251)

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-2022:0251 advisory. Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:...

expat: XML Entity Expansion

An XML Entity Expansion flaw was found in libexpat. This flaw allows an attacker to cause a denial of service when there is an isolated use of external parsers...

firefox: thunderbird: expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing

A memory amplification vulnerability in libexpat allows attackers to trigger excessive dynamic memory allocations by submitting specially crafted XML input. A small input 250 KiB can cause the parser to allocate hundreds of megabytes, leading to denial-of-service DoS through memory exhaustion...

firefox: thunderbird: expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing

A memory amplification vulnerability in libexpat allows attackers to trigger excessive dynamic memory allocations by submitting specially crafted XML input. A small input 250 KiB can cause the parser to allocate hundreds of megabytes, leading to denial-of-service DoS through memory exhaustion...

Security Bulletin: Security vulnerability has been found in IBM Application Gateway

Summary Security vulnerability has been addressed in IBM Application Gateway. Vulnerability Details CVEID:CVE-2023-52425 DESCRIPTION: libexpat through 2.5.0 allows a denial of service resource consumption because many full reparsings are required in the case of a large token for which multiple...

Siemens SIMATIC S7-1500 Integer Overflow or Wraparound (CVE-2024-45491)

An issue was discovered in libexpat before 2.6.3. dtdCopy in xmlparse.c can have an integer overflow for nDefaultAtts on 32-bit platforms where UINTMAX equals SIZEMAX. This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information...

Siemens SIMATIC S7-1500 Improper Restriction of Recursive Entity References in DTDs (CVE-2023-52426)

libexpat through 2.5.0 allows recursive XML Entity Expansion if XMLDTD is undefined at compile time. This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information. %NASLMINLEVEL 80900 C Tenable, Inc. include'compat.inc'; if description...