CVE-2026-64823 Home Assistant Core < 2026.5.4 XSS via Shelly media_player.py thumb URI

Home Assistant Core before 2026.5.4 contains a cross-site scripting vulnerability in the Shelly integration's asyncgetmediaimage method that allows attackers controlling a Shelly device's thumb field to serve arbitrary HTML content by supplying a data URI with a text/html content type without...

GHSA-8WHX-365G-H9VV Loofah `allowed_uri?` does not detect `javascript:` URIs split by named whitespace character references

Summary Loofah::HTML5::Scrub.alloweduri? does not correctly reject javascript: URIs when the scheme is split or prefixed by the HTML5 named character references tab or line feed. This is a bypass of the fix for GHSA-46fp-8f5p-pf2m, which handled the equivalent numeric character references , , but...

Loofah `allowed_uri?` does not detect `javascript:` URIs split by named whitespace character references

Summary Loofah::HTML5::Scrub.alloweduri? does not correctly reject javascript: URIs when the scheme is split or prefixed by the HTML5 named character references tab or line feed. This is a bypass of the fix for GHSA-46fp-8f5p-pf2m, which handled the equivalent numeric character references , , but...

CVE-2026-15156

CVE-2026-15156 affects the WordPress plugin “Essential Addons for Elementor – Popular Elementor Templates & Widgets” up to version 6.6.11. Root cause: insufficient input sanitization and output escaping leading to a Stored Cross-Site Scripting (XSS) vulnerability. Impact: authenticated users with...

[20260806] - Core - XSS through schema.org outputs

Improper escaping flags lead to an XSS vector in schema.org markup outputs...

PT-2026-71734

Name of the Vulnerable Software and Affected Versions SVGO versions 1.0.0 through 2.8.2 SVGO versions 3.0.0 through 3.3.3 SVGO versions 4.0.0 through 4.0.1 Description The removeScripts plugin known as removeScriptElement in versions 1 through 3 fails to remove namespaced or prefixed script...

NPM: Astro: XSS via unescaped spread attribute names in renderHTMLElement (incomplete fix for CVE-2026-54298)

NPM: Astro: XSS via unescaped spread attribute names in renderHTMLElement incomplete fix for CVE-2026-54298 vulnerability discovered by ? in WordPress Npm astro versions 7.0.6...

GHSA-G97X-GVCM-X72H Mistune: XSS via unescaped class option in Admonition directive

In src/mistune/directives/admonition.py, the renderadmonition function concatenates the :class: option directly into the HTML class attribute without escaping lines 63-68. This allows attribute injection and XSS even when HTMLRendererescape=True is used. The directive name parameter is safe...

Mistune: XSS via unescaped class option in Admonition directive

In src/mistune/directives/admonition.py, the renderadmonition function concatenates the :class: option directly into the HTML class attribute without escaping lines 63-68. This allows attribute injection and XSS even when HTMLRendererescape=True is used. The directive name parameter is safe...

GHSA-8C25-4J27-2RV3 Mistune: XSS via percent-encoded javascript URI bypass in safe_url()

Summary An XSS vulnerability in Mistune allows bypassing of safeurl protections via percent-encoded javascript URIs. Details The vulnerability exists in HTMLRenderer.safeurl in Mistune. The function is intended to block harmful URL schemes such as "javascript:" by checking the prefix of the...

CVE-2026-12900

The Spectra Gutenberg Blocks – Website Builder for the Block Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the uagb/image block in all versions up to, and including, 2.19.28 due to insufficient input sanitization and output escaping. This makes it possible for...

CVE-2026-44230 RT: Reflected Cross-Site Scripting in search results chart

RT is an open source, enterprise-grade issue and ticket tracking system. Versions 5.0.4 up to but not including 5.0.10, and 6.0.0 up to but not including 6.0.3 contain a reflected Cross-Site Scripting XSS vulnerability where an attacker who can induce an authenticated RT user to visit a crafted U...

CVE-2026-60028

Joomla Extension - themexpert.com - Authenticated stored XSS in Quix Page Builder 6.2.1 - The Joomla extension Quix Page Builder Pro is vulnerable to an authenticated stored XSS vulnerability. Authenticated builder user could inject scripts, fires for any visitor or admin viewing the page...

CVE-2026-60029

The CVE concerns Joomla extension Quix Page Builder Pro (thethemexpert) with an authenticated stored XSS flaw. The issue allows an authenticated builder user to break out of id/class fields that render to public pages. Affected version(s) are Quix Page Builder Pro before 6.2.1; remediation is upg...

CVE-2026-44228 RT: Stored Cross-Site Scripting via insufficient template escaping

RT is an open source, enterprise-grade issue and ticket tracking system. Versions 6.0.0 and above, prior to 6.0.3, contain a stored Cross-Site Scripting XSS vulnerability, where user-controlled data is rendered without proper HTML escaping. An authenticated user with permission to set the relevan...

CVE-2026-44227

RT is an open source, enterprise-grade issue and ticket tracking system. Versions 6.0.0 and above, prior to 6.0.3 contain a reflected Cross-Site Scripting XSS vulnerability. An attacker who can induce an authenticated RT user to visit a crafted URL can execute arbitrary JavaScript in that user's...

CVE-2026-39878 Chamilo stored XSS via user registration leads to admin account takeover

Chamilo LMS versions 1.11.38 and earlier contain a stored cross-site scripting vulnerability in the user registration form that allows any unauthenticated attacker to execute arbitrary JavaScript in an administrator's browser session, leading to full platform admin account takeover. This has been...

CVE-2026-39878 Chamilo stored XSS via user registration leads to admin account takeover

Chamilo LMS versions 1.11.38 and earlier contain a stored cross-site scripting vulnerability in the user registration form that allows any unauthenticated attacker to execute arbitrary JavaScript in an administrator's browser session, leading to full platform admin account takeover. This has been...

CVE-2026-35198 HeyForm vulnerable to stored XSS via form field titles

HeyForm is an open-source form builder. Prior to version 3.0.0-rc.7, a stored cross-site scripting XSS vulnerability in the form builder allows a low-privileged team member to inject malicious JavaScript that executes when a team owner views the form, leading to complete account takeover through...

CVE-2026-45797 HeyForm Vulnerable to Stored XSS via Unauthenticated SVG File Upload

HeyForm is an open-source form builder. Prior to version 3.0.0-rc.7, the /api/upload endpoint allows unauthenticated file uploads including SVG files. Uploaded SVGs are stored in the static assets directory and served with Content-Type: image/svg+xml by Express's serve-static middleware, allowing...