CVSS 4.0
5.3 mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:NCVE-2025-54881
Medium (5.3). EPSS 0.8% chance of exploitation in the next 30 days. Fixed in mermaid 10.9.4, 11.10.0.
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 10.9.0-rc.1 to 11.9.0, user supplied input for sequence diagram labels is passed to innerHTML during calculation of element size, causing XSS.
Severity
- EPSS
- 0.8% chance of exploitation in the next 30 days; higher than 56% of CVEs (scores of 2026-10-31)
- CWE
- CWE-79
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-7rqq-prvp-x9jh | npm | mermaid | >=11.0.0-alpha.1 <11.10.0 | 11.10.0 |
| GHSA-7rqq-prvp-x9jh | npm | mermaid | >=10.9.0-rc.1 <10.9.4 | 10.9.4 |