libexpat before 2.8.2 does not consider XML_TOK_DATA_CHARS 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.

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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-2026-56412

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

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

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

In the connected CVE data, libexpat before 2.8.2 is affected: the XML_TOK_DATA_CHARS handling in doCdataSection lacks proper handler call depth tracking, enabling a use-after-free under certain policy violations. This stems from an incomplete fix for CVE-2026-50219. CVSS indicates LOCAL attack ve...

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

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...

EUVD-2026-38189

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...

PT-2026-51248

Name of the Vulnerable Software and Affected Versions libexpat versions prior to 2.8.2 Description An issue exists where XML TOK DATA CHARS is not considered in the doCdataSection function. This leads to a lack of handler call depth tracking for various calls from within handlers during policy...

XML Injection

Overview Affected versions of this package are vulnerable to XML Injection during request serialization of scalar XML element values. An attacker can smuggle raw XML markup into generated output by supplying a string that contains CDATA terminator . This lets attacker-controlled content break out...

CVE-2026-53723

Guzzle Services provides an implementation of the Guzzle Command library that uses Guzzle service descriptions to describe web services, serialize requests, and parse responses into easy to use model structures. Versions prior ro 1.5.4 do not safely serialize scalar XML element values containing...

GHSA-Q8R6-5HFW-5JFF guzzlehttp/guzzle-services' XML Request Serialization Vulnerable to XML Injection via CDATA Terminator

Impact guzzlehttp/guzzle-services does not safely serialize scalar XML element values containing the CDATA terminator . The XML request serializer writes values containing , or & with XMLWriter::writeCData$value. If attacker-controlled input contains , the CDATA section closes early and the...

guzzlehttp/guzzle-services' XML Request Serialization Vulnerable to XML Injection via CDATA Terminator

Impact guzzlehttp/guzzle-services does not safely serialize scalar XML element values containing the CDATA terminator . The XML request serializer writes values containing , or & with XMLWriter::writeCData$value. If attacker-controlled input contains , the CDATA section closes early and the...

CVE-2026-53723

Guzzle Services (guzzlehttp/guzzle-services) contains an XML request serialization flaw in versions before 1.5.4 where scalar XML element values may include the CDATA terminator ]]>, causing the CDATA to end early and injecting XML markup into outgoing requests. This is an outgoing request‑bod...

CVE-2026-53723 guzzlehttp/guzzle-services' XML Request Serialization Vulnerable to XML Injection via CDATA Terminator

Guzzle Services provides an implementation of the Guzzle Command library that uses Guzzle service descriptions to describe web services, serialize requests, and parse responses into easy to use model structures. Versions prior ro 1.5.4 do not safely serialize scalar XML element values containing...

CVE-2026-53723 guzzlehttp/guzzle-services' XML Request Serialization Vulnerable to XML Injection via CDATA Terminator

Guzzle Services provides an implementation of the Guzzle Command library that uses Guzzle service descriptions to describe web services, serialize requests, and parse responses into easy to use model structures. Versions prior ro 1.5.4 do not safely serialize scalar XML element values containing...

Guzzle Services 输入验证错误漏洞

Guzzle Services is an open-source client tool built on service descriptions for making HTTP requests. Prior to version 1.5.4 of Guzzle Services, there was a vulnerability related to input validation errors. This vulnerability occurred when the XML request serializer used XMLWriter::writeCData$val...

PT-2026-48666

Guzzle Services provides an implementation of the Guzzle Command library that uses Guzzle service descriptions to describe web services, serialize requests, and parse responses into easy to use model structures. Versions prior ro 1.5.4 do not safely serialize scalar XML element values containing...

Astra Linux – Vulnerability in ruby-loofah

Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. Loofah = 2.2.0; versions before 2.19.1 use recursion to sanitize CDATA sections. This can lead to stack exhaustion and raise a SystemStackError exception, potentially causing ...