High severity · published Aug 6, 2026
CVE-2026-67621
Flowise 3.1.4 Missing Authorization on Document Store Mutation Endpoints
7.6
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FL
Flowise · FlowiseAI
through 3.1.4 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-67621
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-67621
Not Applicable
https://flowiseai.com/sunset
Exploit
https://github.com/Caycon/cve-advisories/blob/main/2026/Flowise/CVE-2026-67621.md
Third Party Advisory
https://www.vulncheck.com/advisories/flowise-missing-authorization-on-document-store-mutation-endpoints
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