CVE-2026-61518: ISPConfig Authenticated SQL Injection via Remote API primary_id Parameter
ISPConfig contains an authenticated SQL injection vulnerability in the Remote API. The primaryid parameter passed to delete and update API methods is concatenated directly into SQL WHERE clauses without integer casting or parameterized query binding. The built-in SQL injection scanner does not block quote-free boolean payloads and does not reject requests in its default configuration. A remote API user holding any single low-privilege function permission can inject arbitrary SQL to delete or modify records across all tenants in the control panel database and extract arbitrary data via blind boolean inference, including password hashes and client records.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this vulnerability?
An attacker needs Remote API access and any single low-privilege function permission. No user interaction is required, and the attack can be performed remotely.
Are default deployments protected by the built-in SQL injection scanner?
No. The scanner does not block quote-free boolean payloads and does not reject these requests in its default configuration.
What could an attacker do after exploiting it?
They can inject arbitrary SQL to modify or delete records across all tenants in the control panel database. They can also extract data through blind boolean inference, including password hashes and client records.