CVE-2021-43861

Incorrect sanitisation function leads 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. 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.

Category

7.2
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.07%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: mermaid-js mermaid
Published at:
Updated at:

References

Link Tags
https://github.com/mermaid-js/mermaid/security/advisories/GHSA-p3rp-vmj9-gv6v third party advisory
https://github.com/mermaid-js/mermaid/commit/066b7a0d0bda274d94a2f2d21e4323dab5776d83 third party advisory patch
https://github.com/mermaid-js/mermaid/releases/tag/8.13.8 third party advisory release notes

Frequently Asked Questions

What is the severity of CVE-2021-43861?
CVE-2021-43861 has been scored as a high severity vulnerability.
How to fix CVE-2021-43861?
To fix CVE-2021-43861, 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-2021-43861 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-43861 is being actively exploited. 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-2021-43861?
CVE-2021-43861 affects mermaid-js mermaid.
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