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
Analysis and contextual insights are available on OpenCVE Cloud.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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Thu, 27 Aug 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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Thu, 27 Aug 2026 15:00:00 +0000
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| First Time appeared |
Flowintel
Flowintel flowintel |
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| Vendors & Products |
Flowintel
Flowintel flowintel |
Thu, 27 Aug 2026 13:00:00 +0000
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| Description | 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 | |
| Title | Flowintel Stored XSS in Case Notes via Malicious Mermaid Diagram Content | |
| Weaknesses | CWE-79 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: CIRCL
Published:
Updated: 2026-08-27T15:54:32.566Z
Reserved: 2026-08-27T12:06:16.476Z
Link: CVE-2026-81753
Updated: 2026-08-27T15:54:29.305Z
Status : Received
Published: 2026-08-27T13:18:43.637
Modified: 2026-08-27T17:21:04.293
Link: CVE-2026-81753
No data.
OpenCVE Enrichment
Updated: 2026-08-27T16:00:15Z