CVE-2026-56389

CVE-2026-56389 : GNU Bison suffers an arbitrary command execution in HTML report generation. The root cause is improper handling of grammar-defined configuration variables: a grammar file can override the executable used for the XML-to-HTML step via %define tool.xsltproc, which is passed directly...

CVE-2026-55471

CVE-2026-55471 affects HAPI FHIR: org.hl7.fhir.utilities XsltUtilities.saxsonTransform overloads (XsltUtilities.saxonTransform) prior to 6.9.10. The root cause is the use of a bare net.sf.saxon.TransformerFactoryImpl() without ACCESS_EXTERNAL_DTD and ACCESS_EXTERNAL_STYLESHEET restrictions, enabl...

PYSEC-2026-1520 LangChain Text Splitters is vulnerable to XML External Entity (XXE) attacks due to unsafe XSLT parsing

The HTMLSectionSplitter class in langchain-text-splitters is vulnerable to XML External Entity XXE attacks due to unsafe XSLT parsing. This vulnerability arises because the class allows the use of arbitrary XSLT stylesheets, which are parsed using lxml.etree.parse and lxml.etree.XSLT without any...

GHSA-2F55-G35J-5JMF HAPI FHIR: XXE in XsltUtilities.saxonTransform via unhardened Saxon TransformerFactory

Summary org.hl7.fhir.utilities.XsltUtilities exposes two parallel families of XSLT transform helpers. The transform... overloads obtain their TransformerFactory from the project's hardened helper XMLUtil.newXXEProtectedTransformerFactory which sets ACCESSEXTERNALDTD="" and...

HAPI FHIR: XXE in XsltUtilities.saxonTransform via unhardened Saxon TransformerFactory

org.hl7.fhir.utilities.XsltUtilities exposes two parallel families of XSLT transform helpers. The transform... overloads obtain their TransformerFactory from the project's hardened helper XMLUtil.newXXEProtectedTransformerFactory which sets ACCESSEXTERNALDTD="" and ACCESSEXTERNALSTYLESHEET="". Th...

CVE-2026-46683 Snappy: SSRF and local file read via the xsl-style-sheet option

Snappy is a PHP library allowing thumbnail, snapshot or PDF generation from a url or a html page. Prior to version 1.7.0, there is a SSRF and local file read vulnerability via the xsl-style-sheet option. This issue has been patched in version 1.7.0...

JLSEC-2026-582 xsltGetInheritedNsList in libxslt before 1.1.43 has a use-after-free issue related to exclusion of...

xsltGetInheritedNsList in libxslt before 1.1.43 has a use-after-free issue related to exclusion of result prefixes...

JLSEC-2026-577

libxslt through 1.1.33 allows bypass of a protection mechanism because callers of xsltCheckRead and xsltCheckWrite permit access even upon receiving a -1 error code. xsltCheckRead can return -1 for a crafted URL that is not actually invalid and is subsequently loaded...

JLSEC-2026-580

In xsltCopyText in transform.c in libxslt 1.1.33, a pointer variable isn't reset under certain circumstances. If the relevant memory area happened to be freed and reused in a certain way, a bounds check could fail and memory outside a buffer could be written to, or uninitialized data could be...

JLSEC-2026-583 numbers.c in libxslt before 1.1.43 has a use-after-free because, in nested XPath evaluations, an...

numbers.c in libxslt before 1.1.43 has a use-after-free because, in nested XPath evaluations, an XPath context node can be modified but never restored. This is related to xsltNumberFormatGetValue, xsltEvalXPathPredicate, xsltEvalXPathStringNs, and xsltComputeSortResultInternal...

EulerOS Virtualization 2.10.0 : libxslt (EulerOS-SA-2026-2056)

According to the versions of the libxslt package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : A use-after-free vulnerability was found in libxslt while parsing xsl nodes that may lead to the dereference of expired pointers an...

Astra Linux – Vulnerability in Firefox and Thunderbird

It was possible to create specific XSLT markup that could bypass the iframe sandbox. This vulnerability affects Firefox ESR versions prior to 91.5, Firefox versions prior to 96, and Thunderbird versions prior to 91.5...

Astra Linux – Vulnerability in Firefox and Thunderbird

An iframe from a cross-origin origin that references an XSLT document would inherit the permissions of the parent domain such as access to microphones or cameras. This vulnerability affects Thunderbird 102.2, Thunderbird 91.13, Firefox ESR 91.13, Firefox ESR 102.2, and Firefox 104...

Astra Linux – Vulnerability in Firefox and Thunderbird

The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame. This vulnerability affects Firefox 94, Thunderbird 91.3, and Firefox ESR 91.3...

Astra Linux – Vulnerability in Chromium, LibXSLT

Before version 91.0.4472.164, using Blink XSLT in Google Chrome allowed a remote attacker to potentially exploit heap corruption through a crafted HTML page...

Astra Linux – Vulnerability in openjdk-11, bcel

The Apache Xalan Java XSLT library is vulnerable to an integer truncation issue when processing malicious XSLT stylesheets. This can be used to corrupt Java class files generated by the internal XSLTC compiler and execute arbitrary Java bytecode. Users are recommended to update to version 2.7.3 o...

PT-2026-38773

The Apache Xalan Java XSLT library is vulnerable to an integer truncation issue when processing malicious XSLT stylesheets. This can be used to corrupt Java class files generated by the internal XSLTC compiler and execute arbitrary Java bytecode. Users are recommended to update to version 2.7.3 o...

libxslt: libxml2: Inifinite recursion at exsltDynMapFunction function in libexslt/dynamic.c

A flaw was found in libxstl/libxml2. The 'exsltDynMapFunction' function in libexslt/dynamic.c does not contain a recursion depth check, which may cause an infinite loop via a specially crafted XSLT document while handling 'dyn:map', leading to stack exhaustion and a local denial of service...

GHSA-V2FC-QM4H-8HQV Nokogiri XSLT transform has a memory leak

Summary Nokogiri's Nokogiri::XSLT::Stylesheettransform leaks a small heap allocation when passed a Ruby string parameter containing a null byte. For applications that pass attacker-controlled input through XSLT.transform parameters, this may be a vector for a denial of service attack against...

BIT-JAVA-2025-24855

numbers.c in libxslt before 1.1.43 has a use-after-free because, in nested XPath evaluations, an XPath context node can be modified but never restored. This is related to xsltNumberFormatGetValue, xsltEvalXPathPredicate, xsltEvalXPathStringNs, and xsltComputeSortResultInternal...