CVE-2026-41150
Published:May 11, 2026
Updated:August 06, 2026
Impact Mermaid v11.14.0 and earlier are vulnerable to a denial-of-service attack when rendering gantt charts, if they use the ""excludes" attribute" (https://mermaid.js.org/syntax/gantt.html?#excludes) to exclude all dates. Example: gantt excludes monday,tuesday,wednesday,thursday,friday,saturday,sunday DoS :2025-01-01, 1d "mermaid.parse" is unaffected, unless you then call the "ganttDb.getTasks()" (which is called when rendering a diagram). Patches This has been patched in: - "v11.15.0" (https://github.com/mermaid-js/mermaid/releases/tag/mermaid%4011.15.0) (see "faafb5d49106dd32c367f3882505f2dd625aa30e" (https://github.com/mermaid-js/mermaid/commit/faafb5d49106dd32c367f3882505f2dd625aa30e)) - "v10.9.6" (https://github.com/mermaid-js/mermaid/releases/tag/v10.9.6) (see "a59ea56174712ee5430dfd5bc877cb5151f501a6" (https://github.com/mermaid-js/mermaid/commit/a59ea56174712ee5430dfd5bc877cb5151f501a6)) Workarounds There are no workarounds available without updating to a newer version of mermaid.
Affected Packages
mermaid (CDN_JS):
Affected version(s) >=0.1.0 <10.9.6Fix Suggestion:
Update to version 10.9.6mermaid (CDN_JS):
Affected version(s) >=11.0.0-alpha.1 <11.15.0Fix Suggestion:
Update to version 11.15.0https://github.com/mermaid-js/mermaid.git (GITHUB):
Affected version(s) >=mermaid@11.0.1 <mermaid@11.15.0Fix Suggestion:
Update to version mermaid@11.15.0https://github.com/mermaid-js/mermaid.git (GITHUB):
Affected version(s) >=v10.9.0 <v10.9.6Fix Suggestion:
Update to version v10.9.6mermaid (NPM):
Affected version(s) >=11.0.0-alpha.1 <11.15.0Fix Suggestion:
Update to version 11.15.0mermaid (NPM):
Affected version(s) >=0.2.11 <10.9.6Fix Suggestion:
Update to version 10.9.6Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
LOW
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Loop with Unreachable Exit Condition ('Infinite Loop')
EPSS
Base Score:
0.38