| Component | Langflow |
| Severity | low (CVSS 3.5) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N |
| Published (NVD) | 2026-04-20 |
| Last modified | 2026-06-17 |
| Affected versions | <= 1.8.3 read from the advisory text: NVD has not published CPE data yet |
| Fixed in | see the vendor advisory |
| Weakness | CWE-79CWE-94 |
| CISA KEV | not listed |
NVD 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.
What to do
- NVD lists no fixed version yet: follow the vendor advisory below and keep Langflow off the public internet until a fix ships.
- Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-6600
- https://gist.github.com/chenhouser2025/935aa5d4556264ba408059eec0960b1a
- https://vuldb.com/submit/791923
- https://vuldb.com/vuln/358235
- https://vuldb.com/vuln/358235/cti
Read more
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