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-2026-7808

justhtml before 1.16.0 contains multiple HTML sanitization bypass issues that can allow active/dangerous content e.g., script or style to survive sanitization, potentially leading to cross-site scripting. The issues primarily affect advanced usage rather than the default JustHTML..., sanitize=Tru...

CVE-2026-7808

justhtml (Python HTML parsing library) before 1.16.0 contains multiple HTML sanitization bypass issues that can allow active content such as [removed] or to survive sanitization, potentially leading to cross-site scripting . The issues primarily affect advanced usage rather than the default Just...

EUVD-2026-64659

justhtml versions are preserved, so untrusted input that is safe in tohtml — including entity-decoded text e.g. script or text from RCDATA/RAWTEXT-parsed elements like , , , and — can be emitted as raw HTML in the Markdown output, enabling a sanitizer bypass and potential cross-site scripting whe...

CVE-2026-7808 justhtml before 1.16.0 Multiple Security Issues via Sanitization

justhtml before 1.16.0 contains multiple HTML sanitization bypass issues that can allow active/dangerous content e.g., script or style to survive sanitization, potentially leading to cross-site scripting. The issues primarily affect advanced usage rather than the default JustHTML..., sanitize=Tru...

CVE-2026-7808 justhtml before 1.16.0 Multiple Security Issues via Sanitization

justhtml before 1.16.0 contains multiple HTML sanitization bypass issues that can allow active/dangerous content e.g., script or style to survive sanitization, potentially leading to cross-site scripting. The issues primarily affect advanced usage rather than the default JustHTML..., sanitize=Tru...

EUVD-2026-64657

justhtml versions 0.9.0 through 1.21.0 contain a cross-site scripting vulnerability in tomarkdown where inline code spans fail to account for blank lines as block boundaries. Attackers can inject blank lines into code or pre element text to break the inline span, causing sanitized HTML to be...

CVE-2026-5388 justhtml before 1.15.0 Multiple Security Issues

justhtml before 1.15.0 contains multiple security issues in URL sanitization helpers cleanurlvalue/cleanurlinjsstring, HTML serialization, Markdown passthrough htmlpassthrough=True, and several custom sanitization-policy edge cases. Depending on configuration, an attacker can bypass sanitization ...

CVE-2026-5388 justhtml before 1.15.0 Multiple Security Issues

justhtml before 1.15.0 contains multiple security issues in URL sanitization helpers cleanurlvalue/cleanurlinjsstring, HTML serialization, Markdown passthrough htmlpassthrough=True, and several custom sanitization-policy edge cases. Depending on configuration, an attacker can bypass sanitization ...

EUVD-2026-64652

justhtml before 1.15.0 contains multiple security issues in URL sanitization helpers cleanurlvalue/cleanurlinjsstring, HTML serialization, Markdown passthrough htmlpassthrough=True, and several custom sanitization-policy edge cases. Depending on configuration, an attacker can bypass sanitization ...

CVE-2026-5388 justhtml before 1.15.0 Multiple Security Issues

justhtml before 1.15.0 contains multiple security issues in URL sanitization helpers cleanurlvalue/cleanurlinjsstring, HTML serialization, Markdown passthrough htmlpassthrough=True, and several custom sanitization-policy edge cases. Depending on configuration, an attacker can bypass sanitization ...

CVE-2026-5388

justhtml (Python HTML sanitizer library) before 1.15.0 contains multiple sanitization bypass vulnerabilities across URL sanitization helpers, HTML serialization, Markdown passthrough, and custom policy edge cases. Attackers can inject active HTML and JavaScript via vectors such as encoded javascr...

CVE-2026-77115 Brave Popup Builder < 0.8.6 - Unauthenticated Reflected XSS via UTM Parameters

Brave Popup Builder brave-popup-builder up to version 0.8.5 reflects UTM query parameters into popup form HTML without escaping them...

EUVD-2026-64638

Brave Popup Builder brave-popup-builder up to version 0.8.5 reflects UTM query parameters into popup form HTML without escaping them...

CVE-2026-41846

CVE-2026-41846...

CVE-2026-77115: Improper Neutralization of Input During Web Page Generation

Brave Popup Builder brave-popup-builder up to version 0.8.5 reflects UTM query parameters into popup form HTML without escaping them...

CVE-2026-8445: Improper Neutralization of Input During Web Page Generation

justhtml versions are preserved, so untrusted input that is safe in tohtml — including entity-decoded text e.g. or text from RCDATA/RAWTEXT-parsed elements like , , , and — can be emitted as raw HTML in the Markdown output, enabling a sanitizer bypass and potential cross-site scripting when that...

CVE-2026-5388: Improper Input Validation

justhtml before 1.15.0 contains multiple security issues in URL sanitization helpers cleanurlvalue/cleanurlinjsstring, HTML serialization, Markdown passthrough htmlpassthrough=True, and several custom sanitization-policy edge cases. Depending on configuration, an attacker can bypass sanitization ...

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...

PT-2026-79775

Name of the Vulnerable Software and Affected Versions justhtml versions prior to 1.16.0 Description Multiple HTML sanitization bypass issues allow active or dangerous content, such as script or style tags, to survive the sanitization process, potentially leading to cross-site scripting. These...