Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in Flowise - #VU129614
Published: May 4, 2026
Vulnerability identifier: #VU129614
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-80
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: FlowiseAI
Affected software:
Flowise
Flowise
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary script code in a victim's browser.
The vulnerability exists due to improper neutralization of script-related html tags in a web page in chat message and agentflow content rendering when rendering untrusted content. A remote attacker can inject a malicious script payload to execute arbitrary script code in a victim's browser.
User interaction is required to view a crafted chat message or agentflow content.
Remediation
Install security update from vendor's website.