CVE-2026-67621

HIGH 7.6

Flowise 3.1.4 Missing Authorization on Document Store Mutation Endpoints

CVSS Score

7.6

EPSS Score

0.0%

EPSS Percentile

0th

Flowise through 3.1.4 contains a missing authorization vulnerability that allows authenticated workspace members to perform unauthorized document store operations by accessing unprotected mutation endpoints. Attackers holding only view-level permissions can send direct HTTP requests to the upsert and refresh document store routes to trigger document ingestion, refresh vector database contents, consume embedding API credits, and modify knowledge bases used by downstream chatflows.

CWE	CWE-862
Vendor	flowiseai
Product	flowise
Published	Aug 6, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

High

Availability

Low

Affected Versions

FlowiseAI / Flowise

0 ≤ 3.1.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/Caycon/cve-advisories/blob/main/2026/Flowise/CVE-2026-67621.md flowiseai.com: https://flowiseai.com/sunset

Credits

CayCon, piropatriot