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Vulnerability record · CVE-2026-100605 · published 26 September 2026

CVE-2026-100605: Missing authorization vulnerability

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.

7.5 CVSS 4.0 High CWE-862 · Missing authorization Deferred
7.5CVSS 4.0 base score
—EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
26 Sep 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-ppmg-4cx6-95hh
https://www.vulncheck.com/advisories/flowise-through-3.1.4-missing-authorization-via-chat-message-routes

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Source: NIST National Vulnerability Database (record CVE-2026-100605), CISA KEV, FIRST EPSS. This page is refreshed as NVD updates the record.