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CVE-2025-71331

MEDIUM
6.1
CVSS 3.1
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.

Metadata

CVE ID
CVE-2025-71331
State
PUBLISHED
Assigner
VulnCheck
Reserved
2026-06-19 12:57 UTC
Published
2026-06-20 15:24 UTC
Last updated
2026-06-20 15:24 UTC
Primary CWE
CWE-80
Improper Neutralization of Script-Related HTML Tags in a Web…
Vendor / Product
Flowise / Flowise
Sources
cve.org  ·  NVD

Severity & Metrics

6.1 MEDIUM CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Affected products (1)
VendorProductPlatformVersions
Flowise Flowise — 0 < 3.0.8, 3.0.8
Weakness (CWE)
CWESourceDescription
CWE-80 cna Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
CVSS scores (2)
ScoreSeverityVersionSourceVector
6.1 MEDIUM 3.1 cna CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.1 MEDIUM 4.0 cna CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
References (2)
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