CVE-2026-6600

| EUVD-2026-23764 MEDIUM
2026-04-20 VulDB
XSS
5.1
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
P
Scope
X

Lifecycle Timeline

3
Severity Changed
Apr 20, 2026 - 04:22 NVD
LOW MEDIUM
CVSS Changed
Apr 20, 2026 - 04:22 NVD
3.5 (LOW) 5.1 (MEDIUM)
Analysis Generated
Apr 20, 2026 - 04:08 vuln.today

DescriptionNVD

A flaw has been found in langflow-ai langflow up to 1.8.3. This affects an unknown function of the file src/frontend/src/modals/IOModal/components/chatView/chatMessage/components/edit-message.tsx of the component Frontend React Component Rendering. Executing a manipulation can lead to cross site scripting. The attack may be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

AnalysisAI

Stored cross-site scripting (XSS) in langflow-ai langflow up to version 1.8.3 allows authenticated users to inject malicious scripts into chat messages via the edit-message component, which are then executed in the browsers of other users viewing the manipulated message. The vulnerability requires user interaction (recipient must view the crafted message) and authenticated access, limiting scope to users within a langflow instance, but publicly available exploit code exists and the vendor has not responded to early disclosure.

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CVE-2026-6600 vulnerability details – vuln.today
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