CVE-2026-22243: Egroupware

High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days.

EGroupware is a Web based groupware server written in PHP. A SQL Injection vulnerability exists in the core components of EGroupware prior to versions 23.1.20260113 and 26.0.20260113, specifically in the `Nextmatch` filter processing. The flaw allows authenticated attackers to inject arbitrary SQL commands into the `WHERE` clause of database queries. This is achieved by exploiting a PHP type juggling issue where JSON decoding converts numeric strings into integers, bypassing the `is_int()` security check used by the application. Versions 23.1.20260113 and 26.0.20260113 patch the vulnerability.

Affected products

• Egroupware Egroupware: before 23.1.20260113 (fixed in 23.1.20260113); from 26.0.20251208, before 26.0.20260113 (fixed in 26.0.20260113)

Published 2026-01-28. Last modified 2026-06-17.