CVE-2025-50538

Flowise vulnerability

CVSS

8.2

EPSS

12.2%

EPSS pct

96th

Exploited

No known

Flowise before 3.0.5 allows XSS via an IFRAME element when an admin views the chat log.

Affected vendor

Flowiseai

Affected product

Flowise

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

Weakness type (CWE)

CWE-79 — Cross-Site Scripting (XSS)

Published

2025-10-06

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, user interaction. Successful exploitation leads to high impact to confidentiality, low impact to integrity.

Its EPSS score of 12.2% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2025-50538

Confirm whether Flowiseai Flowise is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2025-50538.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2025-50538

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2025-50538 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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Are you exposed to CVE-2025-50538?

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