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Fencer Vulns
medium 5.0

CVE-2009-2335 json

WordPress and WordPress MU before 2.8.1 exhibit different behavior for a failed login attempt depending on whether the user account exists,…

published 2009-07-10 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-2331

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
85.0%
EPSS 85.0% chance of exploitation in 30 days, percentile 99.7%
public exploits
2
Metasploit, Exploit-DB

Summary

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."

Patch / fix

  • wordpress wordpress 2.8.1
  • wordpress wordpress_mu 2.8.1
  • wordpress Debian 14, Debian 13, Debian 12 2.8.3-1

debian advisories DEBIAN-CVE-2009-2335

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2009-2335 updated

wordpress: multiple vulnerabilities

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. Published
  2. First public exploit (EDB-17702)

Exploit prediction

85.00% chance of exploitation in the next 30 days, higher than 99.7% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.