Improper Output Neutralization Vulnerability in Debug Log Manager Plugin by WordPress
CVE-2026-9016

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Debug Log Manager – Conveniently Monitor And Inspect Errors
Vendor
CVE Published:
6 June 2026

What is CVE-2026-9016?

The Debug Log Manager plugin for WordPress is susceptible to vulnerabilities allowing unauthenticated users to manipulate logs. The issue arises from the 'log_js_errors()' AJAX handler being accessible without proper authorization, relying solely on a nonce embedded in the HTML. This vulnerability permits attackers to inject false entries into the site's debug log. When JavaScript error logging is active, adversaries can supply harmful values for key fields such as 'message', 'script', 'lineNo', 'columnNo', and 'pageUrl'. This undermines the integrity of error logs, which may mislead administrators during incident reviews and obfuscate genuine activities.

Affected Version(s)

Debug Log Manager – Conveniently Monitor and Inspect Errors 0 <= 2.5.0

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/debug-log-mana...
https://plugins.trac.wordpress.org/browser/debug-log-mana...

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Endang Alfarisi
.