CVE-2026-3346CWE-89

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

Medium · published April 30, 2026

CVSS v3.1
6.4
EPSS
0%
Percentile
16.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00257 · 16.4th percentile
Weakness
CWE-89 · Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Published
2026-04-30T21:06Z
EPSS history
Timeline
  • 30 APR 21:06Z
    Stored Cross-Site Scripting (XSS) in Langflow Markdown Rendering via rehypeRaw
    cvelistv5