ammonia: mXSS via MathML `annotation-xml` encoding strip

If a certain set of MathML tags are enabled, an attacker can inject arbitrary JavaScript code into the user's browser. The annotation-xml tag has slightly different behavior than the other "integration point" tags in MathML and SVG, but ammonia didn't handle it, so it didn't correctly strip the...

GHSA-9JH8-V38H-CVHR ammonia: mXSS via MathML `annotation-xml` encoding strip

If a certain set of MathML tags are enabled, an attacker can inject arbitrary JavaScript code into the user's browser. The annotation-xml tag has slightly different behavior than the other "integration point" tags in MathML and SVG, but ammonia didn't handle it, so it didn't correctly strip the...

lxml: lxml-html-clean: lxml: URL bypass vulnerability in Cleaner via missing xlink:href

A flaw was found in lxml, a library for processing XML and HTML in Python. The lxml.html.defs.linkattrs were missing xlink:href, which could allow an attacker to bypass URL filtering mechanisms. This vulnerability enables URL bypass attacks in embedded content such as Scalable Vector Graphics SVG...

lxml: lxml-html-clean: lxml: URL bypass vulnerability in Cleaner via missing xlink:href

A flaw was found in lxml, a library for processing XML and HTML in Python. The lxml.html.defs.linkattrs were missing xlink:href, which could allow an attacker to bypass URL filtering mechanisms. This vulnerability enables URL bypass attacks in embedded content such as Scalable Vector Graphics SVG...

CVE-2026-63430

A flaw was found in ammonia. This vulnerability allows a remote attacker to conduct cross-site scripting XSS by submitting specially crafted markup to an application configured to permit specific Mathematical Markup Language MathML tags and raw-text elements. Because ammonia does not correctly...

CVE-2026-63430

The ammonia Rust library, used for securing untrusted HTML, is vulnerable to mutation cross-site scripting (mXSS) prior to versions 3.3.2, 4.0.2, and 4.1.3 . The root cause is the incorrect handling of the annotation-xml tag during attribute filtering. When the math and annotation-xml tags are en...

CVE-2026-63430 ammonia: mXSS in ammonia via MathML `annotation-xml` encoding strip

ammonia is a Rust library for repairing and securing untrusted HTML. Prior to 3.3.2, 4.0.2, and 4.1.3, applications that explicitly allow the math tag, annotation-xml, and at least one raw-text HTML element while disallowing the encoding attribute can permit mutation cross-site scripting. ammonia...

CVE-2026-63430 ammonia: mXSS in ammonia via MathML `annotation-xml` encoding strip

ammonia is a Rust library for repairing and securing untrusted HTML. Prior to 3.3.2, 4.0.2, and 4.1.3, applications that explicitly allow the math tag, annotation-xml, and at least one raw-text HTML element while disallowing the encoding attribute can permit mutation cross-site scripting. ammonia...

CVE-2026-63430 ammonia: mXSS in ammonia via MathML `annotation-xml` encoding strip

ammonia is a Rust library for repairing and securing untrusted HTML. Prior to 3.3.2, 4.0.2, and 4.1.3, applications that explicitly allow the math tag, annotation-xml, and at least one raw-text HTML element while disallowing the encoding attribute can permit mutation cross-site scripting. ammonia...

Ammonia HTML Sanitizer – Ammonia Cross-Site Script Vulnerability

Ammonia HTML Sanitizer versions prior to 3.3.2, 4.0.2, and 4.1.3 have a cross-site scripting vulnerability. This vulnerability stems from improper implementation of the encoding-related MathML integration point in annotation-xml. After the attribute filtering removes the encoding, inconsistent...

EulerOS 2.0 SP13 : python-lxml (EulerOS-SA-2026-4095)

According to the versions of the python-lxml packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : lxml is a library for processing XML and HTML in the Python language. Prior to 6.1.1, link attributes in lxml.html.defs.linkattrs were missin...

EulerOS 2.0 SP11 : python-lxml (EulerOS-SA-2026-4277)

According to the versions of the python-lxml packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : lxml is a library for processing XML and HTML in the Python language. Prior to 6.1.1, link attributes in lxml.html.defs.linkattrs were missin...

EulerOS 2.0 SP13 : python-lxml (EulerOS-SA-2026-4186)

According to the versions of the python-lxml packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : lxml is a library for processing XML and HTML in the Python language. Prior to 6.1.1, link attributes in lxml.html.defs.linkattrs were missin...

CVE-2026-104083

SmarterMail before build 9777 contains a stored mutation cross-site scripting vulnerability that allows remote attackers to inject executable script by placing payloads inside a element nested within MathML foreign content , which the custom HTML sanitizer treats as inert CDATA text but browsers...

CVE-2026-104083 SmarterMail < Build 9777 Stored Mutation XSS via MathML Foreign Content

SmarterMail before build 9777 contains a stored mutation cross-site scripting vulnerability that allows remote attackers to inject executable script by placing payloads inside a element nested within MathML foreign content , which the custom HTML sanitizer treats as inert CDATA text but browsers...

CVE-2026-104083

SmarterMail versions before build 9777 are vulnerable to a stored mutation cross-site scripting (XSS) vulnerability. The root cause lies in a custom HTML sanitizer that incorrectly treats a element nested within MathML foreign content (specifically ) as inert CDATA text, while browsers reparse i...

EUVD-2026-95888

SmarterMail before build 9777 contains a stored mutation cross-site scripting vulnerability that allows remote attackers to inject executable script by placing payloads inside a element nested within MathML foreign content , which the custom HTML sanitizer treats as inert CDATA text but browsers...

lxml: lxml-html-clean: lxml: URL bypass vulnerability in Cleaner via missing xlink:href

A flaw was found in lxml, a library for processing XML and HTML in Python. The lxml.html.defs.linkattrs were missing xlink:href, which could allow an attacker to bypass URL filtering mechanisms. This vulnerability enables URL bypass attacks in embedded content such as Scalable Vector Graphics SVG...

lxml: lxml-html-clean: lxml: URL bypass vulnerability in Cleaner via missing xlink:href

A flaw was found in lxml, a library for processing XML and HTML in Python. The lxml.html.defs.linkattrs were missing xlink:href, which could allow an attacker to bypass URL filtering mechanisms. This vulnerability enables URL bypass attacks in embedded content such as Scalable Vector Graphics SVG...

CVE-2026-92106

Improper Neutralization of Input During Web Page Generation 'Cross-site Scripting' vulnerability in dashbitco lazyhtml allows mutation XSS via a parse and serialize round-trip of attacker-supplied HTML. LazyHTML.tohtml/2 and LazyHTML.Tree.tohtml/2 decide whether to escape an element's text from i...