CVE-2021-43861

Incorrect sanitisation function leads to `XSS`

CVSS 7.2 HIGHEPSS 0.9%CWE-20 CWE-79

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.2EPSS 0.9%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

30 Dec 2021Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Mermaid is a Javascript based diagramming and charting tool that uses Markdown-inspired text definitions and a renderer to create and modify complex diagrams. Prior to version 8.13.8, malicious diagrams can run javascript code at diagram readers' machines. Users should upgrade to version 8.13.8 to receive a patch. There are no known workarounds aside from upgrading.

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

mermaid-js · mermaid

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References

https://github.com/mermaid-js/mermaid/commit/066b7a0d0bda274d94a2f2d21e4323dab5776d83 https://github.com/mermaid-js/mermaid/releases/tag/8.13.8 https://github.com/mermaid-js/mermaid/security/advisories/GHSA-p3rp-vmj9-gv6v