CVE-2026-8630

justhtml before 1.12.0 versions and . When a DOM tree is processed by sanitizedom using a custom policy that keeps these elements, text nodes inside them are serialized literally without escaping, allowing attacker-controlled text containing the matching closing tag sequence to break out of the...

CVE-2026-5751

justhtml versions 1.13.0 and earlier contain a parser-differential / mutation cross-site scripting mXSS vulnerability when using a custom SanitizationPolicy that preserves foreign namespaces e.g., dropforeignnamespaces=False with allowlisted SVG/MathML elements or raw-text containers such as...

CVE-2026-6827

justhtml before 1.17.0 contains multiple security issues in sanitization, serialization, and programmatic DOM handling. When custom policies preserve foreign namespaces SVG/MathML, dangerous content such as HTML integration points SVG , MathML and mutation-XSS parser-differential payloads could...

EUVD-2026-64660

justhtml before 1.12.0 versions and . When a DOM tree is processed by sanitizedom using a custom policy that keeps these elements, text nodes inside them are serialized literally without escaping, allowing attacker-controlled text containing the matching closing tag sequence to break out of the...

CVE-2026-8630 justhtml before 1.12.0 Mutation XSS via Raw Text Elements

justhtml before 1.12.0 versions and . When a DOM tree is processed by sanitizedom using a custom policy that keeps these elements, text nodes inside them are serialized literally without escaping, allowing attacker-controlled text containing the matching closing tag sequence to break out of the...

CVE-2026-8630

justhtml versions ≤ 1.11.0 contain a mutation XSS (mXSS) vulnerability in the serialization of raw-text elements (, [removed]). When sanitize_dom() is invoked with a custom policy that retains these elements, text nodes inside them are serialized without escaping, allowing an attacker to inject a...

CVE-2026-8630 justhtml before 1.12.0 Mutation XSS via Raw Text Elements

justhtml before 1.12.0 versions and . When a DOM tree is processed by sanitizedom using a custom policy that keeps these elements, text nodes inside them are serialized literally without escaping, allowing attacker-controlled text containing the matching closing tag sequence to break out of the...

CVE-2026-8630 justhtml before 1.12.0 Mutation XSS via Raw Text Elements

justhtml before 1.12.0 versions and . When a DOM tree is processed by sanitizedom using a custom policy that keeps these elements, text nodes inside them are serialized literally without escaping, allowing attacker-controlled text containing the matching closing tag sequence to break out of the...

EUVD-2026-64655

justhtml before 1.17.0 contains multiple security issues in sanitization, serialization, and programmatic DOM handling. When custom policies preserve foreign namespaces SVG/MathML, dangerous content such as HTML integration points SVG , MathML and mutation-XSS parser-differential payloads could...

CVE-2026-6827 justhtml before 1.17.0 Multiple Cross-Site Scripting Vulnerabilities

justhtml before 1.17.0 contains multiple security issues in sanitization, serialization, and programmatic DOM handling. When custom policies preserve foreign namespaces SVG/MathML, dangerous content such as HTML integration points SVG , MathML and mutation-XSS parser-differential payloads could...

CVE-2026-6827 justhtml before 1.17.0 Multiple Cross-Site Scripting Vulnerabilities

justhtml before 1.17.0 contains multiple security issues in sanitization, serialization, and programmatic DOM handling. When custom policies preserve foreign namespaces SVG/MathML, dangerous content such as HTML integration points SVG , MathML and mutation-XSS parser-differential payloads could...

CVE-2026-6827

justhtml before 1.17.0 contains multiple security issues in sanitization, serialization, and programmatic DOM handling. When custom policies preserve foreign namespaces SVG/MathML, dangerous content such as HTML integration points SVG , MathML and mutation-XSS parser-differential payloads could...

CVE-2026-6827

justhtml before 1.17.0 (a Python HTML sanitization library) contains multiple security flaws in sanitization, serialization, and programmatic DOM handling. When custom policies preserve foreign namespaces (SVG/MathML), HTML integration points such as SVG and MathML can survive sanitization and ...

CVE-2026-5751 justhtml before 1.14.0 Mutation XSS via custom sanitization policies

justhtml versions 1.13.0 and earlier contain a parser-differential / mutation cross-site scripting mXSS vulnerability when using a custom SanitizationPolicy that preserves foreign namespaces e.g., dropforeignnamespaces=False with allowlisted SVG/MathML elements or raw-text containers such as...

CVE-2026-5751

justhtml versions 1.13.0 and earlier are affected by a parser-differential / mutation XSS (mXSS) vulnerability. The issue occurs when a custom SanitizationPolicy preserves foreign namespaces (e.g., drop_foreign_namespaces=False with allowlisted SVG/MathML elements or raw-text containers such as )...

EUVD-2026-64654

justhtml versions 1.13.0 and earlier contain a parser-differential / mutation cross-site scripting mXSS vulnerability when using a custom SanitizationPolicy that preserves foreign namespaces e.g., dropforeignnamespaces=False with allowlisted SVG/MathML elements or raw-text containers such as...

CVE-2026-5751 justhtml before 1.14.0 Mutation XSS via custom sanitization policies

justhtml versions 1.13.0 and earlier contain a parser-differential / mutation cross-site scripting mXSS vulnerability when using a custom SanitizationPolicy that preserves foreign namespaces e.g., dropforeignnamespaces=False with allowlisted SVG/MathML elements or raw-text containers such as...

CVE-2026-5751 justhtml before 1.14.0 Mutation XSS via custom sanitization policies

justhtml versions 1.13.0 and earlier contain a parser-differential / mutation cross-site scripting mXSS vulnerability when using a custom SanitizationPolicy that preserves foreign namespaces e.g., dropforeignnamespaces=False with allowlisted SVG/MathML elements or raw-text containers such as...

CVE-2026-6827: Improper Neutralization of Input During Web Page Generation

justhtml before 1.17.0 contains multiple security issues in sanitization, serialization, and programmatic DOM handling. When custom policies preserve foreign namespaces SVG/MathML, dangerous content such as HTML integration points SVG , MathML and mutation-XSS parser-differential payloads could...

PT-2026-79777

Name of the Vulnerable Software and Affected Versions justhtml versions prior to 1.12.0 Description A mutation cross-site scripting mXSS issue exists during the serialization of raw-text elements, such as and . When the sanitize dom function processes a DOM tree using a custom policy that retains...