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CVE-2026-67621

Flowise 3.1.4 Missing Authorization on Document Store Mutation Endpoints

Published: Aug 6, 2026Updated: Aug 7, 2026 Sources: CVE List NVDCWE-862
7.6HIGH
NVD MITRE
EPSS Score
0.3%
Top 80.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
OpenVAS

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:LI:HA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:HIntegrity
High
A:LAvailability
Low
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Weaknesses

CWE-862

Affected Products

FlowiseAI
oss-projectaka flowise-components, embed, flowise
FlowiseOn-premWeb App
AI / ML / ai-agent-tooling

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://github.com/Caycon/cve-advisories/blob/main/2026/Flowise/CVE-2026-67621.md
github.com
https://flowiseai.com/sunset
flowiseai.com
https://www.vulncheck.com/advisories/flowise-missing-authorization-on-document-store-mutation-endpoints
vulncheck.com

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