CVE-2026-68749

Inefficient Regular Expression Complexity vulnerability in the CSS scrubber in rrrene htmlsanitizeex allows an unauthenticated remote attacker to exhaust server CPU via a long CSS declaration in sanitized HTML. The declaration regex in HtmlSanitizeEx.Scrubber.CSS.scrub/1 matches the property name...

CVE-2026-68750

CVE-2026-68750 affects the html_sanitize_ex crate (versions 0.3.1 up to, but not including, 1.5.3). The vulnerability is a quadratic-time CPU/memory exhaustion in the HTML traversal engine when sanitizing large sibling lists; the traverser recurses on the tail and repeatedly flattens lists, causi...

CVE-2026-66829 html_sanitize_ex HTML5 scrubber keeps attacker-supplied meta refresh, allowing forced cross-origin redirection

URL Redirection to Untrusted Site 'Open Redirect' vulnerability in the HTML5 scrubber in rrrene htmlsanitizeex allows a remote attacker to force visitors of a page to navigate to a site of the attacker's choosing via a element in sanitized HTML. HtmlSanitizeEx.html5/1 keeps attacker-supplied...

CVE-2026-66370 html_sanitize_ex HTML5 scrubber keeps attacker-supplied form-association attributes, allowing form hijacking

URL Redirection to Untrusted Site 'Open Redirect' vulnerability in the HTML5 scrubber in rrrene htmlsanitizeex allows an unauthenticated remote attacker to retarget a form already on the rendering page and receive whatever the victim submits, including credentials, via the form and formaction...

EUVD-2026-53355

Stirling-PDF's POST /api/v1/convert/url/pdf endpoint ConvertWebsiteToPDF.java was not updated with the CustomHtmlSanitizer/SsrfProtectionService SSRF protections that were added to three sibling conversion endpoints html/pdf, file/pdf, markdown/pdf. The endpoint validates only that the initial...

GHSA-CJ75-F6XR-R4G7 Rails HTML Sanitizers: Possible XSS vulnerability with certain configurations

Summary There is a possible cross-site scripting vulnerability in rails-html-sanitizer when the sanitizer is configured to allow an SVG reference element such as . See related GHSA-9wjq-cp2p-hrgf in Loofah, whose SVG local-reference logic rails-html-sanitizer mirrors. - Versions affected: = 1.0.3...

CVE-2026-49458

DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Prior to 3.4.6, DOMPurify.sanitizenode, INPLACE: true accepted same-origin foreign-realm DOM nodes while follow-on checks used parent-realm constructors, causing instanceof checks for forms, named node maps, documen...

UBUNTU-CVE-2026-47423

DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. In 3.4.4, DOMPurify allowed selectedcontent by default, allowing browsers to re-clone an XSS payload after sanitization so that unsanitized markup inside is returned. This issue is fixed in version 3.4.5...

CVE-2026-48761 Symfony: HtmlSanitizer UrlAttributeSanitizer Misses URL Attributes on <object>, <applet>, <iframe>, <img> and the URL Inside <meta http-equiv="refresh"> content

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.1.0 until 6.4.41, 7.4.13, and 8.0.13, UrlAttributeSanitizer::getSupportedAttributes omitted URL-bearing attributes on , , , and , and URLs inside content bypassed URL sanitization, allowing...

CVE-2026-45753

Symfony HtmlSanitizer UrlAttributeSanitizer omits action, formaction, poster, and cite URL-valued attributes, allowing javascript: URIs to bypass sanitization and enable XSS when forms or buttons are used. Affected: Symfony components prior to versions 6.4.40, 7.4.12, and 8.0.12. Mitigation: upgr...

CVE-2026-45753 Symfony: HtmlSanitizer UrlAttributeSanitizer Omits action/formaction/poster/cite — javascript: URI Survives Sanitization (XSS)

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.1.0-BETA1 until 6.4.40, 7.4.12, and 8.0.12, UrlAttributeSanitizer::getSupportedAttributes omits URL-valued attributes including action, formaction, poster, and cite, so configurations that adm...

CVE-2026-45066

CVE-2026-45066 affects Symfony’s HtmlSanitizer: URL sanitization bypass due to UrlSanitizer::parse() following RFC 3986 while browsers use WHATWG, and because is checked against the media policy instead of the link policy. Affected versions: 6.1.0-BETA1–6.4.40, 7.4.12, and 8.0.12. Impact: off-al...

CVE-2026-45066 Symfony: HtmlSanitizer allowLinkHosts() / allowMediaHosts() Bypass via URL-Parser Differentials and <area> Misclassification

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.1.0-BETA1 until 6.4.40, 7.4.12, and 8.0.12, HtmlSanitizer URL sanitization can allow off-allowlist URLs through allowLinkHosts or allowMediaHosts because UrlSanitizer::parse follows RFC 3986...

CVE-2026-45066

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.1.0-BETA1 until 6.4.40, 7.4.12, and 8.0.12, HtmlSanitizer URL sanitization can allow off-allowlist URLs through allowLinkHosts or allowMediaHosts because UrlSanitizer::parse follows RFC 3986...

PYSEC-2026-2537 JupyterLab's command linker attributes in HTML enable one-click command execution from untrusted content

JupyterLab's HTML sanitizer allowlists data-commandlinker-command and data-commandlinker-args on button elements, while CommandLinker listens for all click events on document.body and executes the named command without checking whether the element came from trusted JupyterLab UI. A notebook with ...

Cross-site Scripting (XSS)

Overview jodit is a Jodit is awesome and usefully wysiwyg editor with filebrowser Affected versions of this package are vulnerable to Cross-site Scripting XSS via the safeHTML sanitizer in src/core/helpers/html/safe-html.ts and the clean-html plugin’s value-set/on-change sanitization paths. An...

CVE-2026-58263

Jodit Editor is a WYSIWYG editor with a built-in file browser & image editor. In versions prior to 4.12.28, the built-in clean-html sanitizer can be bypassed by a MathML/...

CVE-2026-52781

OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, the HTML sanitizer grants elements unrestricted data- attributes via :data wildcard. An attacker injects data-controller="poll-for-changes" into a work package description, causing Stimulus.js to mount ...

PT-2026-52912

Name of the Vulnerable Software and Affected Versions OpenProject versions prior to 17.3.3 OpenProject versions prior to 17.4.1 Description The HTML sanitizer allows elements to have unrestricted data- attributes through a :data wildcard. An attacker can inject data-controller="poll-for-changes"...

CVE-2026-54759 SiYuan: Lute HTML sanitizer allows `<iframe>` tags in Bazaar package README, leading to arbitrary command execution via SiYuan Electron client

SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, Lute's HTML sanitizer does not remove elements. Combined with the SiYuan Electron client's permissive security configuration, an attacker can include a malicious in a Bazaar package README that executes arbitrary...