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archive/Patch now/AIR-2026-1118
closedclosed 20 Jun 2026Patch now2 Disclosed vulnerabilityAI

CVE-2025-71331: Flowise cross-site scripting flaw in chat messages and agent functions

Flowise

Flowise versions before 3.0.8 contain a cross-site scripting vulnerability caused by insufficient input filtering in chat messages and custom agent functions. Attackers can inject malicious JavaScript payloads to steal session cookies and data.

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
6.1
EPSS
<0.01 · top 75% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
20 Jun 2026
last update
20 Jun 2026
CVE ids
CVE-2025-71331other records

Timeline · 1

  1. 20 Jun 2026CVE-2025-71331: Flowise before 3.0.8 contains a cross-site scripting (XSS) vulnerability caused by insufficient input filtering in chat messages…

Sources · 1

Advisories and databases

  1. 2026-06-20
    CVE-2025-71331: Flowise before 3.0.8 contains a cross-site scripting (XSS) vulnerability caused by insufficient input filtering in chat messages…
    NVD · nvd.nist.gov/vuln/detail/CVE-2025-71331

Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.

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
xss
dates
happened 20 Jun 2026 · first reported 20 Jun 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-2025-71331: Flowise cross-site scripting flaw in chat messages and agent functions

https://gcdradar.vercel.app/incidents/cve-2025-71331-flowise-cross-site-scripting-flaw-in-chat-mes · AIR-2026-1118 · closed 2026-06-20

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-06-20
- AI role: Attack on AI
- Products: Flowise
- CVE ids: CVE-2025-71331
- CVSS: 6.1

## Summary

Flowise versions before 3.0.8 contain a cross-site scripting vulnerability caused by insufficient input filtering in chat messages and custom agent functions. Attackers can inject malicious JavaScript payloads to steal session cookies and data.

## What to do

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

## Latest updates

- 2026-06-20: CVE-2025-71331: Flowise before 3.0.8 contains a cross-site scripting (XSS) vulnerability caused by insufficient input filtering in chat messages… (https://nvd.nist.gov/vuln/detail/CVE-2025-71331)

## Sources

- 2026-06-20 NVD: CVE-2025-71331: Flowise before 3.0.8 contains a cross-site scripting (XSS) vulnerability caused by insufficient input filtering in chat messages… https://nvd.nist.gov/vuln/detail/CVE-2025-71331

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

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