Exploit insecure direct object references

Exploit Insecure Direct Object Reference vulnerabilities

Accessing other users' data when IDs are sequential or predictable and authorization is missing

• · Web app with user-scoped resources
• · Authenticated account with limited permissions

• · Access to another user's resource
• · Exploitation steps with request/response

• · Burp Suite or similar proxy
• · Two accounts with different permissions

• · Resource endpoint identified
• · Second user account available for testing

• · Implicit authorization blocks access
• · UUID randomization makes guessing impossible
• · Timestamps prevent enumeration

• · Exploits both sequential and predictable UUIDs
• · Covers multi-account and cross-tenant scenarios
• · Includes enumeration and timing techniques