CVE-2026-55691

The EmbedVideo Extension is a MediaWiki extension which adds a parser function called ev and various parser tags for embedding video clips from various video sharing services. Prior to 4.1.0, EmbedHtmlFormatter::toHtml in includes/EmbedService/EmbedHtmlFormatter.php passes the user-supplied class...

CVE-2026-85190

Joomla Extension - regularlabs.com - Privileged stored XSS via class option in Quick Index extension for Joomla 5.0.5 - Quick Index inserts configurable class values into generated HTML without escaping them for an HTML attribute. A crafted value can close the intended class attribute and introdu...

CVE-2026-83546 CoolClock < 4.3.8 - Contributor+ Stored XSS via Skin Class Attribute

The CoolClock WordPress plugin before 4.3.8 does not properly escape a skin setting before outputting it within an HTML attribute, allowing users with contributor-level access and above to inject arbitrary web scripts that execute when the content is viewed...

CVE-2026-8623

The Dear Flipbook WordPress plugin (all versions up to 2.4.30 ) is vulnerable to an authenticated Stored Cross-Site Scripting (XSS) via the post_content parameter, specifically the class attribute of .dvcss elements. Attackers with Contributor-level access can embed a Base64-encoded JSON object i...

CVE-2026-8623 Dear Flipbook <= 2.4.30 - Authenticated (Contributor+) Stored Cross-Site Scripting via '.dvcss' Element Class Attribute

The Dear Flipbook – PDF Flipbook, 3D Flipbook, PDF embed, PDF viewer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'postcontent class attribute of .dvcss element' parameter in all versions up to, and including, 2.4.30 due to insufficient input sanitization and output...

CVE-2026-8623 Dear Flipbook <= 2.4.30 - Authenticated (Contributor+) Stored Cross-Site Scripting via '.dvcss' Element Class Attribute

The Dear Flipbook – PDF Flipbook, 3D Flipbook, PDF embed, PDF viewer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'postcontent class attribute of .dvcss element' parameter in all versions up to, and including, 2.4.30 due to insufficient input sanitization and output...

WordPress Dear Flipbook plugin <= 2.4.30 - Authenticated (Contributor+) Stored Cross-Site Scripting via '.dvcss' Element Class Attribute vulnerability

Authenticated Contributor+ Stored Cross-Site Scripting via '.dvcss' Element Class Attribute vulnerability discovered by tipsen in WordPress Plugin DearFlip versions = 2.4.30...

Dear Flipbook < 2.4.37 - Authenticated (Contributor+) Stored Cross-Site Scripting via '.dvcss' Element Class Attribute

Description The Dear Flipbook – PDF Flipbook, 3D Flipbook, PDF embed, PDF viewer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'postcontent class attribute of .dvcss element' parameter in all versions up to, and including, 2.4.30 due to insufficient input sanitization...

CVE-2026-45733

Trilium Notes is a cross-platform, hierarchical note taking application focused on building large personal knowledge bases. Prior to 0.103.0, the iconClass label value is returned raw by getNoteIcon and inserted without HTML attribute encoding into class attributes in...

EUVD-2026-56147

Cross-site Scripting in the finding renderer in maalfer Pentestify before 2.3.1 allows authenticated users to execute arbitrary JavaScript in the application origin via HTML markup stored in a finding's severity field, which the frontend interpolates unescaped into class and style attributes when...

CVE-2026-18784

A vulnerability was found in o6 open62541 up to 1.5.5. This issue affects the function UAClientreadNodeClassAttribute of the file src/client/uaclienthighlevel.c. Performing a manipulation results in heap-based buffer overflow. Attacking locally is a requirement. The exploit has been made public a...

EUVD-2026-52789

A vulnerability was found in o6 open62541 up to 1.5.5. This issue affects the function UAClientreadNodeClassAttribute of the file src/client/uaclienthighlevel.c. Performing a manipulation results in heap-based buffer overflow. Attacking locally is a requirement. The exploit has been made public a...

CVE-2026-18784 o6 open62541 ua_client_highlevel.c UA_Client_readNodeClassAttribute heap-based overflow

A vulnerability was found in o6 open62541 up to 1.5.5. This issue affects the function UAClientreadNodeClassAttribute of the file src/client/uaclienthighlevel.c. Performing a manipulation results in heap-based buffer overflow. Attacking locally is a requirement. The exploit has been made public a...

CVE-2026-18784 o6 open62541 ua_client_highlevel.c UA_Client_readNodeClassAttribute heap-based overflow

A vulnerability was found in o6 open62541 up to 1.5.5. This issue affects the function UAClientreadNodeClassAttribute of the file src/client/uaclienthighlevel.c. Performing a manipulation results in heap-based buffer overflow. Attacking locally is a requirement. The exploit has been made public a...

CVE-2026-18784 o6 open62541 ua_client_highlevel.c UA_Client_readNodeClassAttribute heap-based overflow

A vulnerability was found in o6 open62541 up to 1.5.5. This issue affects the function UAClientreadNodeClassAttribute of the file src/client/uaclienthighlevel.c. Performing a manipulation results in heap-based buffer overflow. Attacking locally is a requirement. The exploit has been made public a...

CVE-2026-18784

The CVE affects o6 open62541 up to 1.5.5, specifically the UA_Client_readNodeClassAttribute routine in src/client/ua_client_highlevel.c. A heap-based buffer overflow is triggered by manipulation, requiring local access to exploit. The exploit has been made public. Details about affected versions ...

Linux Distros Unpatched Vulnerability : CVE-2026-18784

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A vulnerability was found in o6 open62541 up to 1.5.5. This issue affects the function UAClientreadNodeClassAttribute of the file src/client/uaclienthighlevel.c...

CVE-2026-59926

A flaw was found in Mistune, a Python Markdown parser. The renderadmonition function in the Admonition directive concatenates user-controlled input into the HTML class attribute without proper escaping. This vulnerability allows for attribute injection and Cross-Site Scripting XSS attacks, even...

Cross-site Scripting (XSS)

Overview hono is an Ultrafast web framework for the Edges Affected versions of this package are vulnerable to Cross-site Scripting XSS via the cx class-name handling in src/helper/css/index.ts. An attacker can inject arbitrary HTML into rendered JSX by supplying a malicious class string to cx...

CVE-2026-59926

CVE-2026-59926 : Mistune (Python Markdown parser) contains an XSS due to render_admonition() in src/mistune/directives/admonition.py failing to escape the Admonition directive :class: option when constructing the HTML class attribute. This allows attribute injection and cross-site scripting even ...