CVE-2026-77935
Coze Studio through 0.5.1 Cross-Space Workflow IDOR via Workflow API Handlers
- State
- Published
- Severity
- 8.7 High
- Published
- Oct 20, 2026
- Updated
- Oct 20, 2026
- Reserved
- Aug 21, 2026
Description
Coze Studio through 0.5.1 contains an insecure direct object reference vulnerability in workflow.go that allows authenticated users to access other spaces' workflows by supplying foreign workflowIDs. Attackers can pair their own spaceID with another tenant's workflowID in save, update_meta, batch_delete, canvas, test_run and nodeDebug routes to read, run, overwrite or delete workflows.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 8.3 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L | VulnCheck |
Weaknesses
- CWE-639 Authorization Bypass Through User-Controlled Key
Affected Products
| Product | Versions |
|---|---|
coze-studiocoze-dev |
|
References
- Lasso.security Advisorytechnical-descriptionexploit
- https://github.com/coze-dev/coze-studio/blob/72cecff858a5a18662c5d9d1a4764c53ebc98317/backend/application/workflow/workflow.go#L303technical-description
- VulnCheck Advisory: Coze Studio through 0.5.1 Cross-Space Workflow IDOR via Workflow API Handlersthird-party-advisory
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