Vulnerability Description
ISPConfig contains an authenticated SQL injection vulnerability in the Remote API. The primary_id 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/geo-chen/oss/blob/main/ispconfig3.md
- https://www.vulncheck.com/advisories/ispconfig-authenticated-sql-injection-via-r
FAQ
What is CVE-2026-61518?
CVE-2026-61518 is a vulnerability with a CVSS score of 8.8 (HIGH). ISPConfig contains an authenticated SQL injection vulnerability in the Remote API. The primary_id parameter passed to delete and update API methods is concatenated directly into SQL WHERE clauses with...
How severe is CVE-2026-61518?
CVE-2026-61518 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-61518?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.