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...

CVE-2026-58500 MCP Appium: Unescaped Locator Data XSS in MCP-UI Resource (createLocatorGeneratorUI)

MCP Appium is an MCP server that provides AI assistants with tools to automate mobile app testing on Android and iOS. In versions prior to 1.85.10, the createLocatorGeneratorUI function interpolates attacker-controlled element attributes — text, content-desc, resource-id, and locator selector...

CVE-2026-55789 Logto: SAML IdP injects user-controlled profile attributes raw into signed assertions, allowing privilege escalation at relying Service Providers

Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.41.0, Logto's self-hosted SAML application IdP built the signed SAML response and assertion by string-substituting user-controlled profile attributes such as name, email, and custom attribute-mapping values into...

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Overview weasyprint is a The Awesome Document Factory Affected versions of this package are vulnerable to Improper Neutralization of Special Elements in Output Used by a Downstream Component 'Injection' in the processing of presentational hints when unescaped attribute values are embedded into CS...

CVE-2026-48591 Stored XSS via unescaped HTML attribute values in earmark

Improper Neutralization of Script in Attributes in a Web Page vulnerability in pragdave earmark allows stored cross-site scripting via unescaped HTML attribute values. 'Elixir.Earmark.Transform':makeatt1/2 in lib/earmark/transform.ex splices attribute values verbatim between two literal " bytes: ...

PT-2026-48556

Simple Link Directory through 9.0.4 echoes embed shortcode attributes into HTML data attributes without escaping in the embedder template. Attackers with contributor access can craft a shortcode attribute that injects an event handler executing in a viewer's browser...

EUVD-2026-32065

The Listen Shortcode plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'listen' shortcode in versions up to, and including, 1.0. This is due to insufficient input sanitization and output escaping on user supplied attributes src, start, end in the listenEmbedJS function,...

PT-2026-43500

The Cryptocurrency Prijsvergelijking Widget plugin for WordPress is vulnerable to Stored Cross-Site Scripting in version 1.0. This is due to insufficient output escaping in the as get coin shortcode function, which renders the 'width' and 'height' shortcode attribute directly into the style...

PYSEC-2026-168

Mistune is a Python Markdown parser with renderers and plugins. In 3.2.0 and realier, in src/mistune/directives/image.py, the renderfigure function concatenates figclass and figwidth options directly into HTML attributes without escaping. This allows attribute injection and XSS even when...

DEBIAN-CVE-2026-44896

Mistune is a Python Markdown parser with renderers and plugins. In 3.2.0 and earlier, in src/mistune/directives/image.py, the renderfigure function concatenates figclass and figwidth options directly into HTML attributes without escaping. This allows attribute injection and XSS even when...

CVE-2026-44896

Mistune (Python Markdown parser) contains an XSS flaw in the image figure directive. In versions 3.2.0 and earlier, render_figure() concatenates figclass and figwidth into HTML attributes without escaping, allowing attribute injection and XSS even when HTMLRenderer(escape=True) is enabled, becaus...

GHSA-58CW-G322-P94V Mistune has XSS via unescaped figclass/figwidth in Figure directive

In src/mistune/directives/image.py, the renderfigure function concatenates figclass and figwidth options directly into HTML attributes without escaping lines 152-168. This allows attribute injection and XSS even when HTMLRendererescape=True is used, because these values bypass the inline renderer...

Mistune has XSS via unescaped figclass/figwidth in Figure directive

In src/mistune/directives/image.py, the renderfigure function concatenates figclass and figwidth options directly into HTML attributes without escaping lines 152-168. This allows attribute injection and XSS even when HTMLRendererescape=True is used, because these values bypass the inline renderer...

CVE-2026-3673

An authenticated attacker can store a crafted tag value in usertags and trigger JavaScript execution when a victim opens the list/report view where tags are rendered. The vulnerable renderer interpolates tag content into HTML attributes and element content without escaping. This issue affects...

Orejime - Moderately critical - Cross-site scripting - SA-CONTRIB-2026-032

The IframeConsent element writes HTML attributes without escaping their value. This module has a XSS vulnerability. If an attacker is able to write an tag, they may be able to insert arbitrary JavaScript. This vulnerability is mitigated by the fact that a text format that allows iframe-consent HT...

CVE-2026-34231

Slippers is a UI component framework for Django. Prior to version 0.6.3, a Cross-Site Scripting XSS vulnerability exists in the % attrs % template tag of the slippers Django package. When a context variable containing untrusted data is passed to % attrs %, the value is interpolated into an HTML...

CVE-2026-33311

DiceBear is an avatar library for designers and developers. Starting in version 5.0.0 and prior to versions 5.4.4, 6.1.4, 7.1.4, 8.0.3, and 9.4.1, SVG attribute values derived from user-supplied options backgroundColor, fontFamily, textColor were not XML-escaped before interpolation into SVG...

WordPress plugin Paypal Shortcode 跨站脚本漏洞

WordPress and WordPress plugins are both products of the WordPress Foundation. WordPress is a blog platform developed using the PHP language. This platform allows for the creation of personal blog websites on servers based on PHP and MySQL. A WordPress plugin is an application extension. The...

defuddle vulnerable to XSS via unescaped string interpolation in _findContentBySchemaText image tag

Summary The findContentBySchemaText method in src/defuddle.ts interpolates image src and alt attributes directly into an HTML string without escaping: typescript html += ; An attacker can use a " in the alt attribute to break out of the attribute context and inject event handlers. This is a...

io.vertx/vertx-web: Eclipse Vert.x cross site scripting

In Eclipse Vert.x, when "directory listing" is enabled, file and directory names are inserted into generated HTML without proper escaping in the href, title, and link attributes. An attacker who can create or rename files or directories within a served path can craft filenames containing maliciou...