EUVD-2026-102241

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

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...

SUSE CVE-2026-63430

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...

Linux Distros Unpatched Vulnerability : CVE-2026-63430

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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,...

UBUNTU-CVE-2026-63430

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...

DEBIAN-CVE-2026-63430

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 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 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...

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

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: Improper Neutralization of Input During Web Page Generation

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...

GHSA-PGWW-W46G-26QG AngleSharp HTML5 Spec Compliance: mXSS via annotation-xml HTML Integration Point Bypass

Summary The HTML specification requires that a MathML element with encoding="text/html" or encoding="application/xhtml+xml" is treated as an HTML integration point. Content inside it must be parsed as HTML, not MathML. AngleSharp does not implement this correctly. As a result, the parser produces...

AngleSharp HTML5 Spec Compliance: mXSS via annotation-xml HTML Integration Point Bypass

Summary The HTML specification requires that a MathML element with encoding="text/html" or encoding="application/xhtml+xml" is treated as an HTML integration point. Content inside it must be parsed as HTML, not MathML. AngleSharp does not implement this correctly. As a result, the parser produces...

CVE-2026-63430

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...

PT-2026-60902

Name of the Vulnerable Software and Affected Versions AngleSharp versions prior to 1.5.0 Description AngleSharp fails to correctly implement the HTML specification regarding the element. When this element has an encoding attribute set to text/html or application/xhtml+xml, it should be treated as...

AngleSharp HTML5 Spec Compliance: mXSS via annotation-xml HTML Integration Point Bypass

The HTML specification requires that a MathML element with encoding="text/html" or encoding="application/xhtml+xml" is treated as an HTML integration point. Content inside it must be parsed as HTML, not MathML. AngleSharp does not implement this correctly. As a result, the parser produces a DOM...