Flowise before 3.0.8 contains a cross-site scripting (XSS) vulnerability caused by insufficient input filtering in chat messages and custom agent functions. An attacker can inject malicious JavaScript by sending an iframe payload (e.g., <iframe src="javascript:alert(document.cookie)">) in a chat box, or by having a custom agent function return an XSS payload from an external website. The injected script executes in the victim's browser, enabling theft of cookies and session data.
Metrics
Affected Vendors & Products
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| Flowiseai |
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References
History
Sat, 20 Jun 2026 16:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Flowise before 3.0.8 contains a cross-site scripting (XSS) vulnerability caused by insufficient input filtering in chat messages and custom agent functions. An attacker can inject malicious JavaScript by sending an iframe payload (e.g., <iframe src="javascript:alert(document.cookie)">) in a chat box, or by having a custom agent function return an XSS payload from an external website. The injected script executes in the victim's browser, enabling theft of cookies and session data. | |
| Title | Flowise - Cross-Site Scripting in Chat Messages and Agent Workflows | |
| First Time appeared |
Flowiseai
Flowiseai flowise |
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| Weaknesses | CWE-80 | |
| CPEs | cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Flowiseai
Flowiseai flowise |
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| References |
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| Metrics |
cvssV3_1
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MITRE
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-06-20T15:24:39.877Z
Reserved: 2026-06-19T12:57:55.856Z
Link: CVE-2025-71331
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
Updated: 2026-06-20T17:30:08Z