CVE-2009-2335

Name: CVE-2009-2335
Creator: NVD / NIST
Published: 2009-07-10T21:00:00.203+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 85.00%

Last modified Jun 16, 2026

CVE-2009-2335 is a vulnerability of currently unknown severity. 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.". EPSS estimates a 85.00% chance of exploitation in the next 30 days.

Description

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."

Metrics

EPSS Probability

85.00%

99.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-16

Affected Software

Vendor	Product	Versions
Wordpress	Wordpress	< 2.8.1
Wordpress	Wordpress Mu	< 2.8.1

References

http://corelabs.coresecurity.com/index.php?action=view&type=advisory&name=WordPress_Privileges_UncheckedExploit, Third Party Advisory
http://securitytracker.com/id?1022528Third Party Advisory, VDB Entry
http://www.exploit-db.com/exploits/9110Third Party Advisory, VDB Entry
http://www.osvdb.org/55713Broken Link
http://www.securityfocus.com/archive/1/504795/100/0/threadedThird Party Advisory, VDB Entry
http://www.securityfocus.com/bid/35581Third Party Advisory, VDB Entry
http://www.vupen.com/english/advisories/2009/1833Patch, Vendor Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00597.htmlThird Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00608.htmlThird Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-July/msg00632.htmlThird Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-July/msg00676.htmlThird Party Advisory
http://corelabs.coresecurity.com/index.php?action=view&type=advisory&name=WordPress_Privileges_UncheckedExploit, Third Party Advisory
http://securitytracker.com/id?1022528Third Party Advisory, VDB Entry
http://www.exploit-db.com/exploits/9110Third Party Advisory, VDB Entry
http://www.osvdb.org/55713Broken Link
http://www.securityfocus.com/archive/1/504795/100/0/threadedThird Party Advisory, VDB Entry
http://www.securityfocus.com/bid/35581Third Party Advisory, VDB Entry
http://www.vupen.com/english/advisories/2009/1833Patch, Vendor Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00597.htmlThird Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00608.htmlThird Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-July/msg00632.htmlThird Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-July/msg00676.htmlThird Party Advisory

Timeline

Published: Jul 10, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-2335?

How severe is CVE-2009-2335?

Severity scoring for CVE-2009-2335 is pending analysis. The EPSS model estimates a 85.00% probability of exploitation in the next 30 days.

How do I fix CVE-2009-2335?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-2335?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST