Vulnerability · Published Sep 26, 2026 · Assigned by VulnCheck
CVE-2026-100605Flowise through 3.1.4 Missing Authorization via Chat Message Routes
High 7.1
In plain English
A high-severity missing authorization in Flowise from FlowiseAI. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).
Severity (CVSS 3.1)7.1High
Exploit odds (30 days)0.3%top 80.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
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