CVE-2025-54880

Mermaid does not properly sanitize architecture diagram iconText leading to XSS

Published Aug 19, 2025 CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed
Description
Mermaid is a JavaScript based diagramming and charting tool that uses Markdown-inspired text definitions and a renderer to create and modify complex diagrams. In the default configuration of mermaid 11.9.0 and earlier, user supplied input for architecture diagram icons is passed to the d3 html() method, creating a sink for cross site scripting. This vulnerability is fixed in 11.10.0.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-25190 Mermaid does not properly sanitize architecture diagram iconText leading to XSS
Github GHSA Github GHSA GHSA-8gwm-58g9-j8pw Mermaid does not properly sanitize architecture diagram iconText leading to XSS
History
Type Values Removed Values Added
First Time appeared Mermaid Project
Mermaid Project mermaid
CPEs cpe:2.3:a:mermaid_project:mermaid:*:*:*:*:*:node.js:*:*
Vendors & Products Mermaid Project
Mermaid Project mermaid
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

Type Values Removed Values Added
Description Mermaid is a JavaScript based diagramming and charting tool that uses Markdown-inspired text definitions and a renderer to create and modify complex diagrams. In the default configuration of mermaid 11.9.0 and earlier, user supplied input for architecture diagram icons is passed to the d3 html() method, creating a sink for cross site scripting. This vulnerability is fixed in 11.10.0.
Title Mermaid does not properly sanitize architecture diagram iconText leading to XSS
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Aug 19, 2025, 5:09 PM
Reserved
Jul 31, 2025, 5:23 PM
Status
Analyzed
Published
Aug 19, 2025, 5:15 PM
Modified
Jun 17, 2026, 9:40 AM