PT-2026-41211 · Flowiseai+1 · Flowise

Offset · Published 2026-05-14 · Updated 2026-06-15 · CVE-2026-46476

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Flowise versions prior to 3.1.2

Description A mass assignment issue exists in the CustomTemplate create and update processes. The application uses Object.assign() to copy the request body into a CustomTemplate entity without an explicit field allowlist, allowing a client to overwrite sensitive fields such as workspaceId and id. An authenticated attacker can exploit this by sending a request to the PUT /api/v1/customtemplates/<id> endpoint with a modified workspaceId variable, effectively moving a template to a different workspace. This results in a cross-workspace template takeover and Insecure Direct Object Reference (IDOR), where the attacker can transfer ownership of a template to another workspace whose UUID is known.

Recommendations Update to version 3.1.2. As a temporary workaround, restrict access to the PUT /api/v1/customtemplates/<id> endpoint or monitor for requests containing the workspaceId or id variables in the request body.

Fix

Weakness Enumeration

CWE-915

Related Identifiers

CVE-2026-46476

GHSA-728H-4MWJ-F2P4

Affected Products

Flowise

References · 8

• https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-728h-4mwj-f2p4 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-728h-4mwj-f2p4 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-46476 · Security Note
• https://github.com/FlowiseAI/Flowise/releases/tag/flowise%403.1.2 · Note
• https://github.com/FlowiseAI/Flowise · Note
• https://github.com/FlowiseAI/Flowise/pull/6129 · Note
• https://github.com/FlowiseAI/Flowise/commit/f64047bdcf4cbd6a30ec348b9e3f2899ff514e89 · Note
• https://t.me/cveNotify/167399 · Telegram Post