The WP OAuth Server (OAuth Authentication) WordPress plugin before 4.3.0 has a flawed CSRF and authorisation check when deleting a client, which could allow any authenticated users, such as subscriber to delete arbitrary client.
Severity
CVSS 3.1
4.3 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
EPSS
0.3% chance of exploitation in the next 30 days; higher than 18% of CVEs (scores of 2026-10-31)