Medium 5.3Published May 29, 2026

CVE-2026-41150Mermaid Gantt Charts are vulnerable to an Infinite Loop DoS

Updated under an hour ago (Oct 27, 2026, 6:40 PM ET)

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It affects mermaid-js mermaid and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for mermaid-js mermaid

Exploited in the last 30 days

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Prior to 10.9.6 and 11.15.0, there is a denial-of-service attack when rendering gantt charts, if they use the excludes attribute to exclude all dates. mermaid.parse is unaffected, unless you then call the ganttDb.getTasks() (which is called when rendering a diagram). This vulnerability is fixed in 10.9.6 and 11.15.0.

CVSS: 5.3 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L
Weakness (CWE): CWE-835
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: May 29, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

mermaid-js mermaid mermaid_js:mermaid (from the name)	from 11.0.0-alpha.1, < 11.15.0; before 10.9.6	CNA record
mermaid_project mermaid mermaid_project:mermaid	before 10.9.6; from 11.0.0 before 11.15.0	NVD

References

References

https://github.com/mermaid-js/mermaid/security/advisories/GHSA-6m6c-36f7-fhxh	x-refsource-confirm, third-party-advisory
https://github.com/mermaid-js/mermaid/commit/a59ea56174712ee5430dfd5bc877cb5151f501a6	x-refsource-misc, patch
https://github.com/mermaid-js/mermaid/commit/faafb5d49106dd32c367f3882505f2dd625aa30e	x-refsource-misc, patch
https://github.com/mermaid-js/mermaid/releases/tag/mermaid%4011.15.0	x-refsource-misc, release-notes
https://github.com/mermaid-js/mermaid/releases/tag/v10.9.6	x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.