CVE-2026-41149

A flaw was found in Mermaid, a JavaScript tool for creating diagrams and charts. A remote attacker could exploit this vulnerability by injecting malicious HTML through the classDef directive in Mermaid state diagrams. This allows for Document Object Model DOM injection, which escapes the Scalable...

Linux Distros Unpatched Vulnerability : CVE-2026-41149

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Versions 10.9.5 and earlier, as well as 11.0.0-alpha.1...

CVE-2026-41149

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Versions 10.9.5 and earlier, as well as 11.0.0-alpha.1 through 11.14.0, are vulnerable to HTML injection under the default configuration. Specifically, the classDef directive in Mermaid state...

DEBIAN-CVE-2026-41149

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Versions 10.9.5 and earlier, as well as 11.0.0-alpha.1 through 11.14.0, are vulnerable to HTML injection under the default configuration. Specifically, the classDef directive in Mermaid state...

CVE-2026-41149

CVE-2026-41149 affects Mermaid state diagrams via improper sanitization of the classDef directive, allowing DOM injection that can escape the SVG context. Concrete details: vulnerable in Mermaid versions ≤10.9.5 and 11.0.0-alpha.1–11.14.0; fixed in 10.9.6 and 11.15.0. The issue is mitigated by st...

CVE-2026-41149

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Versions 10.9.5 and earlier, as well as 11.0.0-alpha.1 through 11.14.0, are vulnerable to HTML injection under the default configuration. Specifically, the classDef directive in Mermaid state...

EUVD-2026-31520

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Versions 10.9.5 and earlier, as well as 11.0.0-alpha.1 through 11.14.0, are vulnerable to HTML injection under the default configuration. Specifically, the classDef directive in Mermaid state...

CVE-2026-41149 Mermaid: Improper sanitization of `classDef` in state diagrams leads to HTML injection

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Versions 10.9.5 and earlier, as well as 11.0.0-alpha.1 through 11.14.0, are vulnerable to HTML injection under the default configuration. Specifically, the classDef directive in Mermaid state...

CVE-2026-41149 Mermaid: Improper sanitization of `classDef` in state diagrams leads to HTML injection

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Versions 10.9.5 and earlier, as well as 11.0.0-alpha.1 through 11.14.0, are vulnerable to HTML injection under the default configuration. Specifically, the classDef directive in Mermaid state...

CVE-2026-41149

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Versions 10.9.5 and earlier, as well as 11.0.0-alpha.1 through 11.14.0, are vulnerable to HTML injection under the default configuration. Specifically, the classDef directive in Mermaid state...

CVE-2026-41148

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Versions 10.9.5 and prior, in addition to 11.0.0-alpha.1 through 11.12.0 are vulnerable to CSS injection through improper sanitization. The state diagram and any other diagram type that routes...

Mermaid: Improper sanitization of `classDef` in state diagrams leads to HTML injection

Impact Under the default configuration, Mermaid state diagram's classDef allow DOM injection that escapes the SVG, although tags are removed, preventing XSS. Proof-of-concept stateDiagram-v2 classDef xss...

NPM: Mermaid: Improper sanitization of `classDef` in state diagrams leads to HTML injection

NPM: Mermaid: Improper sanitization of classDef in state diagrams leads to HTML injection vulnerability discovered by ? in WordPress Npm mermaid versions = 10.9.5...

GHSA-GHCM-XQFW-Q4VR Mermaid: Improper sanitization of `classDef` in state diagrams leads to HTML injection

Impact Under the default configuration, Mermaid state diagram's classDef allow DOM injection that escapes the SVG, although tags are removed, preventing XSS. Proof-of-concept stateDiagram-v2 classDef xss...

Arbitrary Code Injection

Overview org.webjars.npm:mermaid is a package for generation of diagrams and flowcharts from text in a similar manner as markdown. Affected versions of this package are vulnerable to Arbitrary Code Injection due to improper sanitization of the classDef function in state diagrams. An attacker can...

Mermaid: Improper sanitization of `classDefs` in diagrams leads to CSS injection

Details The state diagram and any other diagram type that routes user-controlled style strings through createCssStyles parser for Mermaid v11.14.0 and earlier captures classDef values with an unrestricted regex: jison // packages/mermaid/src/diagrams/state/parser/stateDiagram.jison:83 ^\n...

PT-2026-39885

Name of the Vulnerable Software and Affected Versions Mermaid versions prior to 10.9.6 Mermaid versions 11.0.0-alpha.1 through 11.14.0 Description Improper sanitization in the state diagram and other diagram types that route user-controlled style strings through the createCssStyles parser allows...