simple endpoint POST1.png

Damian K. β€” Penetration Tester / Offensive Security Engineer

πŸ“’ Shared from RedNode Security

Simple endpoint.

Big problem.

Seen recently:

An API allowed querying user profiles using client-controlled identifiers.

Looked harmless.

β†’ turned into full user enumeration

β†’ data extraction at scale

β†’ cross-table correlation

No exploits.

No brute force.

Just broken assumptions.

Question:

Can users in your system list other users indirectly?

If yes β€” you might already have the first step of an attack chain.

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