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archive/Patch now/AIR-2026-1053
closedclosed 30 Apr 2026Patch now2 Disclosed vulnerabilityAI

CVE-2026-3346: IBM Langflow Desktop stored cross-site scripting

IBM Langflow Desktop

IBM Langflow Desktop contains a stored cross-site scripting vulnerability in versions 1.6.0 through 1.8.4. Authenticated users can embed arbitrary JavaScript code in the Web UI, potentially leading to credential disclosure.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

CVSS
6.4
EPSS
<0.01 · top 96% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
30 Apr 2026
last update
30 Apr 2026
CVE ids
CVE-2026-3346other records

Timeline · 1

  1. 30 Apr 2026CVE-2026-3346: IBM Langflow Desktop 1.6.0 through 1.8.4 Lanflow is vulnerable to stored cross-site scripting.

Sources · 1

Advisories and databases

  1. 2026-04-30
    CVE-2026-3346: IBM Langflow Desktop 1.6.0 through 1.8.4 Lanflow is vulnerable to stored cross-site scripting.
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-3346

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Classification

lane
Patch now
AI role
Attack on AI
categories
Infrastructure vulnerability
severity
2 · Disclosed vulnerability
fix status
Fix status unknown
targets
Framework / tooling
owasp llm top 10
LLM03:2025 Supply Chain
mitre atlas
no technique for these categories
tags
langflowxss
dates
happened 30 Apr 2026 · first reported 30 Apr 2026
origin
NVD
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
record
confidence 0.95 · created 2026-10-18 10:04Z · updated 2026-10-18 10:04Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# CVE-2026-3346: IBM Langflow Desktop stored cross-site scripting

https://gcdradar.vercel.app/incidents/cve-2026-3346-ibm-langflow-desktop-stored-cross-site-scripti · AIR-2026-1053 · closed 2026-04-30

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-04-30
- AI role: Attack on AI
- Products: IBM Langflow Desktop
- CVE ids: CVE-2026-3346
- CVSS: 6.4

## Summary

IBM Langflow Desktop contains a stored cross-site scripting vulnerability in versions 1.6.0 through 1.8.4. Authenticated users can embed arbitrary JavaScript code in the Web UI, potentially leading to credential disclosure.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-04-30: CVE-2026-3346: IBM Langflow Desktop 1.6.0 through 1.8.4 Lanflow is vulnerable to stored cross-site scripting. (https://nvd.nist.gov/vuln/detail/CVE-2026-3346)

## Sources

- 2026-04-30 NVD: CVE-2026-3346: IBM Langflow Desktop 1.6.0 through 1.8.4 Lanflow is vulnerable to stored cross-site scripting. https://nvd.nist.gov/vuln/detail/CVE-2026-3346

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

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