CVE-2026-81753

Affected versions of Flowintel render Mermaid blocks contained in stored case notes without sufficiently neutralizing attacker-controlled markup. Because Mermaid note content is persisted and later rendered for other users, an attacker with permission to create or edit a note could store a crafted Mermaid payload that results in JavaScript execution when another user views the affected case note. The patch adds explicit Mermaid detection and HTML escaping around the token content before the generated Mermaid wrapper is returned. It also moves the wrapping logic earlier in page initialization so Markdown instances are protected consistently. Version impacted >= 3.3.0

CVSS

No CVSS.

References

Link	Resource
https://github.com/flowintel/flowintel/commit/61c97e67f5d04030f26e7900c470b52f9f37da06

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-27 13:18

Updated : 2026-08-28 15:28

NVD link : CVE-2026-81753

Mitre link : CVE-2026-81753

CVE.ORG link : CVE-2026-81753

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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