IDOR in open-webui/open-webui

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• openwebui open webui0.3.8

Versions reported by the vendor

Affected version ranges reported by the assigning authority (@huntr_ai). Independent of NVD's CPE analysis and usually ahead of it.

• open-webui open-webui/open-webui

  • unspecified and later · up to and including latestaffected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2026-44566Open WebUI: Arbitrary File Upload and Path Traversal
  39Monitor
• CVE-2026-56400open-webui - Remote Code Execution via CORS Misconfiguration and Session Validation
  36Monitor
• CVE-2026-59216Open WebUI: Cross-user code-interpreter and tool execution via unvalidated Socket.IO event-caller session_id
  36Monitor
• CVE-2026-59214Open WebUI: Stored web worker XSS via Pyodide
  36Monitor
• CVE-2026-44551Open WebUI: LDAP Empty Password Authentication Bypass
  36Monitor
• CVE-2024-8017Cross-site Scripting (XSS) in open-webui/open-webui
  36Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

The endpoint fetches the record by the ID sent in the request, but never checks whether the record belongs to the requesting user.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1const invoice = await Invoice.findById(req.params.id);2res.json(invoice);

1const invoice = await Invoice.findOne({2  id: req.params.id,3  ownerId: req.user.id,4});5if (!invoice) return res.sendStatus(404);6res.json(invoice);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.