RCE in Langflow-Ai Langflow
CVE-2026-6600
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (23.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 23.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Langflow-Ai Langflow — versions 1.8.0, 1.8.1, 1.8.2
Weakness classification (CWE)
References
- vuldb.com/vuln/358235 (vdb-entry)
- vuldb.com/vuln/358235/cti (signature, permissions-required)
- vuldb.com/submit/791923 (third-party-advisory)
- gist.github.com/chenhouser2025/935aa5d4556264ba408059eec0960b1a (exploit)
Frequently asked questions
- What is CVE-2026-6600?
- CVE-2026-6600 is a low-severity vulnerability in Langflow-Ai Langflow, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2026-04-20.
- How severe is CVE-2026-6600?
- Low severity. CVSS v3 base score is 3.5 out of 10.