CVE-2009-2335: WordPress

Medium severity, CVSS 5.0. EPSS: 85% chance of exploitation in the next 30 days.

WordPress and WordPress MU before 2.8.1 exhibit different behavior for a failed login attempt depending on whether the user account exists, which allows remote attackers to enumerate valid usernames. NOTE: the vendor reportedly disputes the significance of this issue, indicating that the behavior exists for "user convenience."

Affected products

• WordPress WordPress: before 2.8.1 (fixed in 2.8.1)
• WordPress WordPress Mu: before 2.8.1 (fixed in 2.8.1)

Published 2009-07-10. Last modified 2026-06-16.