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.

CVSS 4.0

7.5CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

7.1CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

EPSS

0.3% chance of exploitation in the next 30 days; higher than 19% of CVEs (scores of 2026-10-25)

CWE

CWE-862

Published

2026-09-26

Modified

2026-09-30

Record from

the NVD, synced 2026-10-19

References

• 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
• https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-ppmg-4cx6-95hh

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