Critical (9.8) in s9y serendipity. EPSS 2.9% chance of exploitation in the next 30 days.
include/functions_installer.inc.php in Serendipity through 2.0.5 is vulnerable to File Inclusion and a possible Code Execution attack during a first-time installation because it fails to sanitize the dbType POST parameter before adding it to an include() call in the bundled-libs/serendipity_generateFTPChecksums.php file.
Severity
CVSS 3.0
9.8 critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
2.9% chance of exploitation in the next 30 days; higher than 86% of CVEs (scores of 2026-10-31)