Auth bypass in Flowiseai Flowise
CVE-2026-100605
Flowise through 3.1.4 contains missing route-level RBAC checks on chat message endpoints that allow low-privileged API keys to read and delete chat history. Attackers with valid but low-privileged API keys can access GET and DELETE chat message routes without required flow permissions to read chat histories, prompts, model responses, and delete messages.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (19.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-ppmg-4cx6-95hh) (vendor-advisory)
- VulnCheck Advisory: Flowise through 3.1.4 Missing Authorization via Chat Message Routes (third-party-advisory)
Frequently asked questions
- What is CVE-2026-100605?
- CVE-2026-100605 is a high-severity vulnerability in Flowiseai Flowise, classified under Missing Authorization. CVSS score: 7.1/10. Published 2026-09-26.
- How severe is CVE-2026-100605?
- High severity. CVSS v3 base score is 7.1 out of 10.