High severity · published Jun 8, 2026
CVE-2026-46476
Flowise: CustomTemplate create+update mass-assignment allows cross-workspace template takeover
8.8
CVSS
0.3%
EPSS
No
On KEV
Description
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.1.2, CustomTemplate create and update mass-assignment allows cross-workspace template takeover. This issue has been patched in version 3.1.2.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 27% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FL
Flowise · FlowiseAI
< 3.1.2 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-46476
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-46476
Product
https://github.com/FlowiseAI/Flowise/releases/tag/flowise%403.1.2
Mitigation
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-728h-4mwj-f2p4
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