CVE-2025-54880

Public Exploit
Mermaid does not properly sanitize architecture diagram iconText leading to XSS

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.

Category

5.1
CVSS
Severity: Medium
CVSS 4.0 •
EPSS 0.04%
Affected: mermaid-js mermaid
Published at:
Updated at:

References

Link Tags
https://github.com/mermaid-js/mermaid/security/advisories/GHSA-8gwm-58g9-j8pw
https://github.com/mermaid-js/mermaid/commit/2aa83302795183ea5c65caec3da1edd6cb4791fc
https://github.com/mermaid-js/mermaid/commit/734bde38777c9190a5a72e96421c83424442d4e4

Frequently Asked Questions

What is the severity of CVE-2025-54880?
CVE-2025-54880 has been scored as a medium severity vulnerability.
How to fix CVE-2025-54880?
To fix CVE-2025-54880, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-54880 being actively exploited in the wild?
It is possible that CVE-2025-54880 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-54880?
CVE-2025-54880 affects mermaid-js mermaid.
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