CVE-2026-77935CWE-639

CVE-2026-77935

High · published October 20, 2026

CVSS v3.1
8.3
EPSS
0%
Percentile
25.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
CVSS v4.0
8.7 · 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
EPSS
0.00337 · 25.9th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-10-20T05:17Z
References (3)
https://github.com/coze-dev/coze-studio/blob/72cecff858a5a18662c5d9d1a4764c53ebc98317/backend/application/workflow/workflow.go#L303 · [email protected]https://www.lasso.security/vulnerability-database/cve-2026-77935 · [email protected]https://www.vulncheck.com/advisories/coze-studio-through-0.5.1-cross-space-workflow-idor-via-workflow-api-handlers · [email protected]
EPSS history
Timeline
  • 21 OCT 03:32Z
    EPSS moved — → 0%
    epss
  • 20 OCT 00:46Z
    Coze Studio through 0.5.1 Cross-Space Workflow IDOR via Workflow API Handlers
    cvelistv5
  • 20 OCT 00:46Z
    Coze Studio through 0.5.1 Cross-Space Workflow IDOR via Workflow API Handlers
    cvelistv5