CVE-2026-73849: Emlog

Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days.

Emlog is an open source website building system. In 2.6.26 and earlier, install.php accepts action=reinstall without authentication and deliberately skips the already-installed check because the guard runs only when $act != 'reinstall'. A remote attacker can submit hostname, dbuser, dbpasswd, dbname, dbprefix, username, password, and email values to cause file_put_contents('config.php', $config) to overwrite the configuration with attacker-controlled database settings and create a new administrator account. No fixed version is available as of this review.

Affected products

• Emlog Emlog: up to and including 2.6.26

Published 2026-08-14. Last modified 2026-09-16.