CVE-2026-77935Coze Studio through 0.5.1 Cross-Space Workflow IDOR via Workflow API Handlers

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.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• Lasso.security Advisory technical-descriptionexploit
• https://github.com/coze-dev/coze-studio/blob/72cecff858a5a18662c5d9d1a4764c53ebc98317/backend/application/wor… technical-description
• VulnCheck Advisory: Coze Studio through 0.5.1 Cross-Space Workflow IDOR via Workflow API Handlers third-party-advisory