CVE-2025-71331
Flowise - Cross-Site Scripting in Chat Messages and Agent Workflows
CVSS Score
6.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-80 |
| Vendor | flowise |
| Product | flowise |
| Published | Jun 20, 2026 |
Stay Ahead of the Next One
Get instant alerts for flowise flowise
Be the first to know when new medium vulnerabilities affecting flowise flowise are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
Flowise / Flowise
0 < 3.0.8
References
Credits
🔍 quitbug