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.
References (3)
Core 3
Core References
Exploit, Patch, Vendor Advisory x_refsource_confirm
https://github.com/mermaid-js/mermaid/security/advisories/GHSA-8gwm-58g9-j8pw
Patch x_refsource_misc
https://github.com/mermaid-js/mermaid/commit/2aa83302795183ea5c65caec3da1edd6cb4791fc
Product x_refsource_misc
https://github.com/mermaid-js/mermaid/commit/734bde38777c9190a5a72e96421c83424442d4e4
Scores
CVSS v3
6.1
EPSS
0.0001
EPSS Percentile
0.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (2)
mermaid_project/mermaid
11.1.0 - 11.10.0
npm/mermaid
11.1.0 - 11.10.0npm
Published
Aug 19, 2025
Tracked Since
Feb 18, 2026