libexpat before 2.8.2 has an integer overflow in XML_ParseBuffer because it lacked a check that was present in XML_Parse.

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libexpat before 2.8.2 has an integer overflow in addBinding.

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libexpat before 2.8.2 has an integer overflow in getAttributeId.

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EulerOS 2.0 SP15 : expat (EulerOS-SA-2026-2439)

According to the versions of the expat packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : libexpat before 2.7.5 allows a NULL pointer dereference in the function setContext on retry after an earlier ouf-of-memory condition.CVE-2026-32778...

CVE-2026-56132

A flaw was found in libexpat, a library used for parsing XML data. An attacker could exploit a heap-based buffer overflow, a type of memory error, by providing specially crafted XML input. This vulnerability occurs when the library mishandles memory reallocation while processing XML, particularly...

OESA-2026-2770 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 2.8.2 lacks handler call depth tracking for calls to XMLResumeParser from within handlers in cases of a poli...

OESA-2026-2768 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 2.8.2 lacks handler call depth tracking for calls to XMLResumeParser from within handlers in cases of a poli...

CVE-2026-56406

A flaw was found in libexpat. An integer overflow vulnerability exists in the XMLParseBuffer function due to a missing check. This flaw could allow an attacker to cause memory corruption, potentially leading to arbitrary code execution, information disclosure, or a denial of service. Mitigation...

CVE-2026-56410

A flaw was found in libexpat. Specifically, the xmlwf utility contains an integer overflow vulnerability in its resolveSystemId function. This flaw could be exploited by an attacker to potentially gain unauthorized access to sensitive information or execute arbitrary code, leading to a compromise...

SUSE CVE-2026-56404

libexpat before 2.8.2 has an integer overflow in addBinding...

SUSE CVE-2026-56405

libexpat before 2.8.2 has an integer overflow in getAttributeId...

SUSE CVE-2026-56406

libexpat before 2.8.2 has an integer overflow in XMLParseBuffer because it lacked a check that was present in XMLParse...

SUSE CVE-2026-56407

libexpat before 2.8.2 has an integer overflow in doProlog that is related to storeEntityValue and entity textLen...

SUSE CVE-2026-56408

libexpat before 2.8.2 has an integer overflow in copyString...

SUSE CVE-2026-56409

xmlwf in libexpat before 2.8.2 has an integer overflow for the output filename when -d outputDir is used...

SUSE CVE-2026-56410

xmlwf in libexpat before 2.8.2 has an integer overflow in resolveSystemId...

SUSE CVE-2026-56411

xmlwf in libexpat before 2.8.2 has an integer overflow in endDoctypeDecl via NOTATION declarations...

SUSE CVE-2026-56412

libexpat before 2.8.2 does not consider XMLTOKDATACHARS in doCdataSection and thus lacks handler call depth tracking for various calls from within handlers in cases of a policy violation. Thus, a use-after-free can occur. NOTE: this issue exists because of an incomplete fix for CVE-2026-50219...

CVE-2026-56412

A flaw was found in libexpat. This vulnerability, present in versions before 2.8.2, stems from improper handling of XML CDATA sections, where the library fails to adequately track the depth of handler calls. This can result in a 'use-after-free' error, a type of memory corruption that could allow...

CVE-2026-56411

A flaw was found in libexpat, a software library used for parsing XML Extensible Markup Language documents. An attacker could exploit an integer overflow vulnerability in the xmlwf utility by crafting malicious NOTATION declarations. This could lead to the disclosure of sensitive information or...