Is CVE-2026-53756 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-53756?

CVE-2026-53756 has a CVSS v3 severity of MEDIUM (4.9).

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CVE-2026-53756

Description

Emlog is an open source website building system. Prior to version 2.6.16, Emlog CMS Pro contains a blind SQL injection in User_Model::getUserDataByLogin(). The $account parameter is directly interpolated into SQL queries without any filtering. The vulnerability is reachable through the auth cookie validation path, where $username is extracted from the cookie and passed unfiltered into SQL — guarded only by an HMAC signature that requires AUTH_KEY to forge. This issue has been patched in version 2.6.16.