CVE-2025-71331 — Flowise - Cross-Site Scripting in Chat Messages and Agent Workflows
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 inje…
Published: 2026-06-20 · CVSS: 5.1 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7