Vulnerability Description
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.1.2, a mass assignment vulnerability exists in the chatflow update endpoint of FlowiseAI. The endpoint allows clients to modify server-controlled properties such as deployed, isPublic, workspaceId, createdDate, and updatedDate when updating a chatflow object. Due to missing server-side validation and authorization checks, an authenticated user can manipulate internal attributes of a chatflow and reassign it to another workspace. This allows cross-workspace resource reassignment and unauthorized modification of deployment and visibility settings. This issue has been patched in version 3.1.2.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Flowiseai | Flowise | < 3.1.2 |
Related Weaknesses (CWE)
References
- https://github.com/FlowiseAI/Flowise/releases/tag/flowise%403.1.2ProductRelease Notes
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-5wxp-qjgq-fx6mExploitVendor Advisory
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-5wxp-qjgq-fx6mExploitVendor Advisory
FAQ
What is CVE-2026-42863?
CVE-2026-42863 is a vulnerability with a CVSS score of 8.1 (HIGH). Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.1.2, a mass assignment vulnerability exists in the chatflow update endpoint of FlowiseAI. Th...
How severe is CVE-2026-42863?
CVE-2026-42863 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-42863?
Check the references section above for vendor advisories and patch information. Affected products include: Flowiseai Flowise.