How APVISO Tests for IDOR
IDOR vulnerabilities allow one user to access another user's records by changing object identifiers such as IDs, UUIDs, slugs, or document keys.
Common Locations
- REST resource IDs
- GraphQL object queries
- File downloads
- Invoices and reports
- Tenant-scoped admin pages
APVISO Test Vectors
- Identifier swapping
- Sequential ID checks
- Cross-account requests
- Role downgrade comparisons
Evidence Collected
- Two-account proof
- Object identifier
- Unauthorized response sample
- Authorization check recommendation
Remediation Themes
- Enforce server-side ownership checks
- Test with multiple roles
- Avoid client-trusted tenant IDs
- Centralize object authorization
Methodology
IDOR testing requires application context. APVISO looks for object identifiers in URLs, API bodies, GraphQL queries, download links, and hidden fields, then tests whether changing those identifiers crosses an authorization boundary.
The most valuable tests use two or more accounts. The scanner agent compares access across tenants, users, and roles while the lead agent evaluates whether the behavior is true unauthorized access or expected sharing. This helps reduce noise and keeps findings tied to business impact.
Confirmed IDOR findings show the object, the unauthorized request, and the expected access rule. Remediation guidance focuses on centralized server-side authorization, tenant scoping, and automated regression tests so the issue does not reappear in the next release.
Frequently Asked Questions
Does APVISO need multiple test accounts to find IDOR?▾
Multiple scoped accounts improve coverage because APVISO can compare what each role and tenant should be able to access.
Are UUIDs enough to prevent IDOR?▾
No. Unpredictable IDs reduce guessing but do not replace server-side authorization checks for each object access.
Related Compliance Guides
Related Terms
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