VULNERABILITY INTELLIGENCE

CVE-2025-71331

CVSS score6.1 MEDIUM
EPSS probability0.33%
CISA KEVNot currently listed
Published2026-06-20
Last modified2026-10-19
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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.

Weakness classification

  • disclosure@vulncheck.com: CWE-80

Primary references