CVE-2011-4090: s9y Serendipity

Medium severity, CVSS 6.1. EPSS: 3.4% chance of exploitation in the next 30 days.

Serendipity before 1.6 has an XSS issue in the karma plugin which may allow privilege escalation.

Affected products

• s9y Serendipity: before 1.6 (fixed in 1.6)

Published 2019-11-26. Last modified 2026-06-16.