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Medium 6.4Published Apr 30, 2026

CVE-2026-3346Stored Cross-Site Scripting (XSS) in Langflow Markdown Rendering via rehypeRaw

Updated under an hour ago ()

Does this affect you?

It affects IBM Langflow Desktop and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

IBM Langflow Desktop 1.6.0 through 1.8.4 Lanflow is vulnerable to stored cross-site scripting. This vulnerability allows an authenticated user to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.

CVSS
6.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Weakness (CWE)
CWE-89
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
ibm
NVD analysis
Analyzed
Record last updated
May 1, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
IBM Langflow Desktop
ibm:langflow_desktop
from 1.6.0 through 1.8.4
CNA record
langflow langflow_desktop
langflow:langflow_desktop
from 1.6.0 through 1.8.4
NVD

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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