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CVE-2009-2335

5.0
CVSS v2.0 Base Score
85.34%
HIGH RiskEPSS (99th percentile)

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."

Published: 7/10/2009
Modified: 4/23/2026
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Vulnerability Summary

CVSS v2 Score

5

AV:N/AC:L/Au:N/C:P/I:N/A:N

EPSS Score (Exploitation Probability)

85.34%HIGH Exploitation Risk
99th percentile

This vulnerability has a 85.34% probability of being exploited in the next 30 days, ranking higher than 99% of all scored CVEs.

CWE Classification

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