Lab 290 — PayLedger — GraphQL Broken Access Control

hackadvisor

Task: Payment platform with GraphQL API and role-based access (admin/finance/viewer), given finance credentials. Solution: Used GraphQL introspection to discover admin-only queries, then exploited missing resolver-level authorization to access adminConfig containing the flag.

graphql authorization_bypass broken_access_control introspection rbac

broken_access_controlgraphql_introspectionauthorization_bypassschema_enumeration

$ ls tags/ techniques/

graphql authorization_bypass broken_access_control introspection rbac

broken_access_controlgraphql_introspectionauthorization_bypassschema_enumeration

Analysis

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$ python3 exploit.py --target 192.168.1.1 --port 8080
[*] Connecting to target...
[+] Shell obtained!

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