GHSA-VFGH-JCMW-G37Q markdown-it: Quadratic-time denial of service in inline HTML parsing with html enabled

Summary With html: true, markdown-it takes quadratic time to parse repeated unterminated HTML constructs inside a paragraph. This affects HTML comments , ?, , and . When the terminator is absent, matching fails. Parsing eventually reaches the next opener and scans an overlapping suffix again...

markdown-it: Quadratic-time denial of service in inline HTML parsing with html enabled

Summary With html: true, markdown-it takes quadratic time to parse repeated unterminated HTML constructs inside a paragraph. This affects HTML comments , ?, , and . When the terminator is absent, matching fails. Parsing eventually reaches the next opener and scans an overlapping suffix again...

npm: markdown-it: Quadratic-time denial of service in inline HTML parsing with html enabled

npm: markdown-it: Quadratic-time denial of service in inline HTML parsing with html enabled vulnerability discovered by ? in WordPress npm markdown-it versions 14.3.3...

CVE-2026-111766

The markdown-it Markdown parser is vulnerable to a quadratic-time denial of service (DoS) in versions prior to 14.3.3 and 15.0.3 . When the html option or commonmark preset is enabled, processing attacker-controlled Markdown containing repeated unterminated inline HTML comments, processing instru...

CVE-2026-111766 markdown-it: Quadratic-time denial of service in inline HTML parsing with html enabled

markdown-it is a Markdown parser. Prior to 14.3.3 and 15.0.3, when the html option or commonmark preset is enabled and the constructs occur inside a paragraph, attacker-controlled Markdown containing repeated unterminated inline HTML comments, processing instructions, declarations, or CDATA...

CVE-2026-111766 markdown-it: Quadratic-time denial of service in inline HTML parsing with html enabled

markdown-it is a Markdown parser. Prior to 14.3.3 and 15.0.3, when the html option or commonmark preset is enabled and the constructs occur inside a paragraph, attacker-controlled Markdown containing repeated unterminated inline HTML comments, processing instructions, declarations, or CDATA...

EUVD-2026-95137

savg-sanitizer is a PHP SVG/XML sanitizer. Prior to 1.0.0, svg-sanitizer's isHrefSafeValue validates an SVG href after XML DTD entity expansion, but saveXML serializes the original entity reference after removing the DTD declaration. A crafted entity such as Tab can appear to the sanitizer as a...

CVE-2026-33749 n8n Vulnerable to XSS via Binary Data Inline HTML Rendering

n8n is an open source workflow automation platform. Prior to versions 1.123.27, 2.13.3, and 2.14.1, an authenticated user with permission to create or modify workflows could craft a workflow that produces an HTML binary data object without a filename. The /rest/binary-data endpoint served such...

OneUptime: Stored XSS via Mermaid Diagram Rendering (securityLevel: "loose")

Summary The Markdown viewer component renders Mermaid diagrams with securityLevel: "loose" and injects the SVG output via innerHTML. This configuration explicitly allows interactive event bindings in Mermaid diagrams, enabling XSS through Mermaid's click directive which can execute arbitrary...

SUSE CVE-2005-3895

Open Ticket Request System OTRS 1.0.0 through 1.3.2 and 2.0.0 through 2.0.3, when AttachmentDownloadType is set to inline, renders text/html e-mail attachments as HTML in the browser when the queue moderator attempts to download the attachment, which allows remote attackers to execute arbitrary w...

SUSE CVE-2006-0091

Cross-site scripting XSS vulnerability in webmail in Open-Xchange 0.8.1-6 and earlier, with "Inline HTML" enabled, allows remote attackers to inject arbitrary web script or HTML via e-mail attachments, which are rendered inline...

PT-2018-13599

Name of the Vulnerable Software and Affected Versions Active Storage versions 5.2.0 through 5.2.1.0 Description A bypass issue in Active Storage for Google Cloud Storage and Disk services allows an attacker to modify the content-disposition and content-type parameters, potentially executing HTML...

CVE-2006-1045: Undefined Security Weakness

The HTML rendering engine in Mozilla Thunderbird 1.5, when "Block loading of remote images in mail messages" is enabled, does not properly block external images from inline HTML attachments, which could allow remote attackers to obtain sensitive information, such as application version or IP...

CVE-2006-0091: Undefined Security Weakness

Cross-site scripting XSS vulnerability in webmail in Open-Xchange 0.8.1-6 and earlier, with "Inline HTML" enabled, allows remote attackers to inject arbitrary web script or HTML via e-mail attachments, which are rendered inline...