UpHeron
All vulnerabilities

WordPress core

CVE-2009-2335

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."

Severity
Medium 5.0
Published
10 Jul 2009
Last changed
16 Jun 2026
Added to UpHeron
17 Oct 2026
Fixed in
2.8.1
Sources
NVD

Affected software

SoftwareAffected versions
WordPressWordPress core · cpe:a:wordpress:wordpress
  • Every version before 2.8.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2009-2335
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2009-2335