What is CVE-2025-26319?

CVE-2025-26319 is a critical-severity vulnerability in Flowiseai Flowise, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2025-03-04.

How severe is CVE-2025-26319?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2025-26319 known to be exploited?

8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Arbitrary file upload in Flowiseai Flowise

CVE-2025-26319

FlowiseAI Flowise v2.2.6 was discovered to contain an arbitrary file upload vulnerability in /api/v1/attachments.

Vulnerability class: Unrestricted File Upload

Published 2025-03-04 · last modified 2026-09-30.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.559 (99.0th percentile), scored 2026-10-18.

High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.559 · newest: 0.559 · change: 0.000

Affected products

Flowiseai Flowise — versions 2.2.6

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

Public proof-of-concept exploits

References

github.com/dorattias/CVE-2025-26319 (Exploit, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2025-26319?: CVE-2025-26319 is a critical-severity vulnerability in Flowiseai Flowise, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2025-03-04.
How severe is CVE-2025-26319?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2025-26319 known to be exploited?: 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.