Improperly Controlled Modification of Dynamically-Determined Object Attributes in Flowise - CVE-2026-42862
Published: May 18, 2026
Vulnerability identifier: #VU131706
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-42862
CWE-ID: CWE-915
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: FlowiseAI
Affected software:
Flowise
Flowise
Detailed vulnerability description
The vulnerability allows a remote user to modify tool resources across workspace boundaries.
The vulnerability exists due to improperly controlled modification of dynamically-determined object attributes in the tool update endpoint when handling crafted PUT requests to /api/v1/tools/{toolId}. A remote user can supply server-controlled fields such as workspaceId, createdDate, and updatedDate to modify tool resources across workspace boundaries.
This breaks tenant isolation in multi-workspace environments.
How to mitigate CVE-2026-42862
Install security update from vendor's website.