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Status published
High
CVE-2021-43861
Incorrect sanitisation function leads to `XSS`
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
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CVE-2024-38527
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CVE-2022-31108
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4.1
Affected Vendor
mermaid-js
View all reports →Affected Software
mermaid
Vulnerable Versions:
< 8.13.8
Timeline
Official Publish:
December 30th, 2021
Last Modified:
August 4th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
MITRE ATT&CK TTPs
T1189
Drive-by Compromise
Initial Access
T1059.007
JavaScript
Execution
T1539
Steal Web Session Cookie
Collection
T1213
Data from Information Repositories
Collection
T1567
Exfiltration Over Web Service
Exfiltration
T1491.001
Defacement
Impact
T1190
Exploit Public-Facing Application
Initial Access
T1059
Command and Scripting Interpreter
Execution
T1068
Exploitation for Privilege Escalation
Privilege Escalation
T1565.002
Stored Data Manipulation
Impact