CVE-2026-41897

Mantis Bug Tracker MantisBT is an open source issue tracker. From 1.0.0 to 2.28.1, lack of validation of filtertarget parameter on returndynamicfilters.php normally used as an AJAX in View Issues Page allows an attacker to inject arbitrary HTML if the target is a TEXTAREA custom field. This...

EUVD-2026-31995

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, rendertocul builds a table-of-contents tree from a list of level, id, text tuples. Both the id value used as href="" and the text value used as the visible link label are inserted into tags via a plain Python format...

GHSA-VR9V-27GG-QGX4 Umbraco.Cms: XSS/HTML Injection in Umbraco Backoffice confirmation dialog

Impact Authenticated users are able to inject HTML vulnerability into an input field, which is rendered in the confirmation dialog without proper output encoding. Patches This issue has been patched in 17.4.0...

PT-2026-42665

Name of the Vulnerable Software and Affected Versions samlify versions prior to 2.13.0 Description samlify is a Node.js library for SAML single sign-on. The template substitution mechanism only escapes attribute contexts, meaning values inserted into element text, such as , are not escaped. This...

CVE-2025-40903

A Stored HTML Injection vulnerability was discovered in the Schedule Restore Archive functionality due to improper validation of an input parameter. An authenticated user with administrative privileges can define a malicious restore schedule containing HTML tags. When a victim views the affected...

SiYuan cross-site scripting vulnerabilities

SiYuan is an open-source personal knowledge management system developed by SiYuan. Versions of SiYuan prior to 3.7.0 had a cross-site scripting vulnerability. This vulnerability occurred because the view name stored in the kernel did not undergo HTML escaping, allowing HTML injection and ultimate...

EUVD-2026-28652

Brave CMS is an open-source CMS. Prior to commit 6c56603, the contact form is publicly accessible no authentication required. User-supplied message text is passed through PHP's nl2br function, which converts newlines to tags but does not escape HTML. The resulting string is then passed to a Blade...

SUSE CVE-2026-41674

xmldom is a pure JavaScript W3C standard-based XML DOM Level 2 Core DOMParser and XMLSerializer module. In @xmldom/xmldom prior to versions 0.9.10 and 0.8.13 and xmldom version 0.6.0 and prior, the package serializes DocumentType node fields internalSubset, publicId, systemId verbatim without any...

CVE-2018-25269 ICEWARP 11.0.0.0 Cross-Site Scripting via Email HTML Injection

ICEWARP 10.3.4 and 11.0.0.0 contains a cross-site scripting vulnerability that allows attackers to inject malicious HTML elements into emails by embedding base64-encoded payloads in object and embed tags. Attackers can craft emails containing data URIs with embedded scripts that execute in the...

pretalx mail templates vulnerable to email injection via unescaped user-controlled placeholders

An unauthenticated attacker can send arbitrary HTML-rendered emails from a pretalx instance's configured sender address by embedding malformed HTML or markdown link syntax in a user-controlled template placeholder such as the account display name. The most direct vector is the password-reset flow...

EUVD-2026-19653

Papra is a minimalistic document management and archiving platform. Prior to 26.4.0, transactional email templates in Papra interpolate user.name directly into HTML without escaping or sanitization. An attacker who registers with a display name containing HTML tags will have those tags injected...

CVE-2026-35208

lichess.org is the forever free, adless and open source chess server. Any approved streamer can inject arbitrary HTML into /streamer and the homepage “Live streams” widget by placing markup in their Twitch/YouTube stream title. CSP is present and blocks inline script execution, but the issue is...

CVE-2026-35466

XSS vulnerability in cveInterface.js allows for inject HTML to be passed to display, as cveInterface trusts input from CVE API services...

CVE-2026-34601 xmldom: XML injection via unsafe CDATA serialization allows attacker-controlled markup insertion

xmldom is a pure JavaScript W3C standard-based XML DOM Level 2 Core DOMParser and XMLSerializer module. In xmldom versions 0.6.0 and prior and @xmldom/xmldom prior to versions 0.8.12 and 0.9.9, xmldom/xmldom allows attacker-controlled strings containing the CDATA terminator to be inserted into a...

CVE-2026-34601

xmldom is a pure JavaScript W3C standard-based XML DOM Level 2 Core DOMParser and XMLSerializer module. In xmldom versions 0.6.0 and prior and @xmldom/xmldom prior to versions 0.8.12 and 0.9.9, xmldom/xmldom allows attacker-controlled strings containing the CDATA terminator to be inserted into a...

CVE-2026-29136

SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to inject HTML into notification emails about new CA certificates...

CVE-2026-29136

Affected software: SEPPmail Secure Email Gateway (pre-15.0.3). The issue is HTML injection in notification emails about new CA certificates, caused by and/or enabling injection into these messages. Impact is limited to the ability to inject HTML into CA-cert notification emails; no additional det...

xmldom: XML injection via unsafe CDATA serialization allows attacker-controlled markup insertion

Summary @xmldom/xmldom allows attacker-controlled strings containing the CDATA terminator to be inserted into a CDATASection node. During serialization, XMLSerializer emitted the CDATA content verbatim without rejecting or safely splitting the terminator. As a result, data intended to remain...

GHSA-WH4C-J3R5-MJHP xmldom: XML injection via unsafe CDATA serialization allows attacker-controlled markup insertion

Summary @xmldom/xmldom allows attacker-controlled strings containing the CDATA terminator to be inserted into a CDATASection node. During serialization, XMLSerializer emitted the CDATA content verbatim without rejecting or safely splitting the terminator. As a result, data intended to remain...

PT-2026-29305

Name of the Vulnerable Software and Affected Versions Discourse versions 2026.1.0 through 2026.1.2, 2026.2.0 through 2026.2.1, and 2026.3.0 through 2026.3.0. Description Discourse, an open-source discussion platform, is affected by a flaw that allows an attacker who can create shared AI...