Medium

Debug Log Manager <= 2.5.0 - Unauthenticated Improper Output Neutralization for Logs via log_js_errors AJAX Action

  • Disclosed: 05.06.2026
  • Updated: 11.10.2026 10:22

The Debug Log Manager – Conveniently Monitor and Inspect Errors plugin for WordPress is vulnerable to Improper Output Neutralization for Logs in all versions up to, and including, 2.5.0. This is due to the log_js_errors() AJAX handler being registered for unauthenticated users via wp_ajax_nopriv_log_js_errors and gated only by a nonce that is publicly disclosed in every front-end page's HTML through wp_localize_script() whenever JavaScript error logging is enabled, providing no real authorization barrier. This makes it possible for unauthenticated attackers to inject arbitrary forged entries into the site's WordPress debug log by supplying attacker-controlled values for the message, script, lineNo, columnNo, and pageUrl fields — enabling spoofing of error and incident records, obscuring malicious activity within fabricated log noise, and misleading administrators who rely on the log for triage. This vulnerability is only exploitable when the plugin's JavaScript error logging feature is enabled, as the requisite nonce is only published into the page HTML under that condition.

Affected software

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PlatformPackageVulnerable versionsFixed in
WordPress plugin Debug Log Manager – Conveniently Monitor and Inspect Errors <= 2.5.0 2.5.1

References

CVSS score 5.3/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness (CWE)
CWE-117
Platform
WordPress
Package
Debug Log Manager – Conveniently Monitor and Inspect Errors
Disclosed
05.06.2026
Updated
11.10.2026 10:22

Sources and licenses

Wordfence Intelligence - 25abca87-1be2-427e-ab01-377d52917052 - Wordfence Intelligence

Copyright 1999-2026 The MITRE Corporation

Copyright 2012-2026 Defiant Inc.

This record contains material that is subject to copyright

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Copyright 2012-2026 Defiant Inc.

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

https://www.wordfence.com/wordfence-intelligence-terms-and-conditions/
Wordfence Intelligence
Wordfence Intelligence - Defiant, Inc.
Copyright Defiant, Inc. All rights reserved except as granted below.
License grant, section 3.1 of the Wordfence Intelligence Terms and Conditions (January 26, 2026):

Subject to this Agreement, Company hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute the Service. Any copy you make for such purposes is authorized provided that you reproduce Company’s copyright designation, this license, and the license of any disclosed Company licensor in any such copy.

Full applicable Agreement: https://www.wordfence.com/wordfence-intelligence-terms-and-conditions/

Vulnerability history: Debug Log Manager – Conveniently Monitor and Inspect Errors

All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (9) in the archive
Total entries
9
First → latest
11.2023 06.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • High 3
  • Medium 6

Disclosures per year

  1. 2023: 3
  2. 2024: 3
  3. 2025: 2
  4. 2026: 1
Severity:
  1. Debug Log Manager <= 2.5.0 - Unauthenticated Improper Output Neutralization for Logs via log_js_errors AJAX Action this entry
    Medium · 5.3 CVE-2026-9016 <= 2.5.0 2.5.1

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