TI-2009-02226 Aliases CVE-2009-2335 GHSA-4643-w74c-m4wv

WordPress and WordPress MU before 2.8.1 exhibit different behavior for a failed login…

MEDIUM 64CWE-16Published 2009-07-10 · Updated 2024-08-07

Key facts

Attack vector: Network
Privileges required: None
User interaction: — Not recorded in CVSS 2.0
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: Partial · None · None
Fix status: No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA.

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."

Why it matters now

EPSS 0.85 99th percentileScored 2026-11-07

Public exploit Yes 2 exploit referencesTagged by NVD and the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:wordpress:wordpress::::::::	before 2.8.1	Vulnerable	WordPress
cpe:2.3:a:wordpress:wordpress_mu::::::::	before 2.8.1	Vulnerable	WordPress

cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* Versions before 2.8.1 Vulnerable ·WordPress
cpe:2.3:a:wordpress:wordpress_mu:*:*:*:*:*:*:*:* Versions before 2.8.1 Vulnerable ·WordPress

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2009-2335
2026-10-03 Alias added: GHSA-4643-w74c-m4wv

References

Exploit 2

Patch 1

ADV-2009-1833

Advisory 4

Other 1

55713

TI-2026-45010 WordPress < 7.0.2 - REST API batch-route confusion and SQL injection issue leading to Remote Code Execution KEVCVSS 3.1CRITICAL 9.8
TI-2016-08118 The mailSend function in the isMail transport in PHPMailer before 5.2.18 might allow… KEVCVSS 3.1CRITICAL 9.8
TI-2026-83466 Predictable staging paths let attackers run code in WordPress Core KEVCVSS 3.1HIGH 8.1
TI-2026-59973 An unauthenticated attacker can make `get_page_template()` page-template resolution… KEVCVSS 3.1HIGH 8.1
TI-2016-08129 The isMail transport in PHPMailer before 5.2.20 might allow remote attackers to pass… CVSS 3.1CRITICAL 9.8
TI-2026-42844 WordPress < 7.0.2 - Facilitated SQL Injection via author__not_in in WP_Query KEVCVSS 3.1MEDIUM 5.9

See all 356 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences