XSS in Flowiseai Flowise
CVE-2025-50538
Flowise before 3.0.5 allows XSS via an IFRAME element when an admin views the chat log.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.140 (96.5th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.131 · newest: 0.140 · change: +0.009
Affected products
- Flowiseai Flowise — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/FlowiseAI/Flowise/security/advisories/GHSA-964p-j4gg-mhwc (Exploit, Third Party Advisory)
- github.com/FlowiseAI/Flowise/pull/4905 (Patch)
- github.com/FlowiseAI/Flowise/releases/tag/flowise@3.0.5 (Release Notes)
Frequently asked questions
- What is CVE-2025-50538?
- CVE-2025-50538 is a high-severity vulnerability in Flowiseai Flowise, classified under Cross-site Scripting. CVSS score: 8.2/10. Published 2025-10-06.
- How severe is CVE-2025-50538?
- High severity. CVSS v3 base score is 8.2 out of 10.
- Is CVE-2025-50538 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.