Is CVE-2021-43861 in the CISA KEV catalog?

No. CVE-2021-43861 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-43861?

CVE-2021-43861 has a CVSS v3 base score of 7.2 (HIGH).

What is the EPSS score for CVE-2021-43861?

CVE-2021-43861 has an EPSS score of 0.91% (56th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-43861?

Upgrade node-mermaid on debian 11 to 8.7.0+ds+~cs27.17.17-3+deb11u2 or later.

CVE & CISA-KEV Catalog

CVE-2021-43861

HIGH

7.2

CVSS v3

NVD

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.

CWE-20Improper Input Validation CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

node-mermaidDebian

Fixed in:8.7.0+ds+~cs27.17.17-3+deb11u2CVE-2021-43861

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.91%probability of exploitation in 30 days

56thpercentile

Moderate risk: more likely to be exploited than 56% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory2

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	KEV	Fix

Embed a live status badge for CVE-2021-43861

Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.