CVE-2026-6600 Details
Description
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.
A stored cross-site scripting vulnerability has been identified in Langflow versions through 1.8.3. The issue arises in the frontend React component responsible for rendering chat messages and flow descriptions. The vulnerability is rooted in the 'MarkdownField' component, which, while allowing raw HTML through the 'rehype-raw' plugin, neglects to sanitize this input. This flaw enables authenticated users to inject malicious JavaScript that is saved in the database and executed in the browsers of users who view the affected content.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Apr 20, 2026CISA-ADP
Assessed Apr 20, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://gist.github.com/chenhouser2025/935aa5d4556264ba408059eec0960b1a | [email protected] | ExploitTechnical Description |
| https://vuldb.com/submit/791923 | [email protected] | Technical Description |
| https://vuldb.com/vuln/358235 | [email protected] | AdvisoryExploitPartial Content |
| https://vuldb.com/vuln/358235/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
| CWE-94 | Improper Control of Generation of Code ('Code Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| langflow-ai langflow | <= 1.8.3 (semver) |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 29, 2026 | Data Remediation | [email protected] |
| Apr 20, 2026 | New CVE Received | [email protected] |