Debug Log Manager <= 2.5.0 — Unauthenticated Improper Output Neutralization for Logs via log_js_errors AJAX Action
CVE-2026-9016Published · Updated Action summary
Affected: ≤2.5.0Update to 2.5.1 or newer
All remediation steps- Severity
- Medium5.3
- CVSS
- 5.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Debug Log Manager – Conveniently Monitor and Inspect Errors debug-log-manager
- Affected≤ 2.5.0
- Patched in2.5.1
Update to 2.5.1 or newer.
You are affected if you run ≤ 2.5.0. Version 2.5.1 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Debug Log Manager – Conveniently Monitor and Inspect Errors.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 2.5.1, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Debug Log Manager – Conveniently Monitor and Inspect Errors to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Endang Alfarisi.
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.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Debug Log Manager – Conveniently Monitor and Inspect Errors
All 10| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via 'log_js_errors' AJAX Endpoint ≤2.5.2Update to 2.5.3 | CVE-2026-120114 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤2.3.4Update to 2.3.5 | CVE-2025-3809 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤2.3.4Update to 2.3.5 | CVE-2025-32613 | |
| Medium5.4 | Missing Authorization ≤2.3.1Update to 2.3.2 | CVE-2024-35669 | |
| Medium4.3 | Missing Authorization via toggle_debugging ≤2.3.1Update to 2.3.2 | CVE-2024-33915 |
- High7.2Unauthenticated Stored Cross-Site Scripting via 'log_js_errors' AJAX Endpoint
≤2.5.2Update to 2.5.3
- High7.2Unauthenticated Stored Cross-Site Scripting
≤2.3.4Update to 2.3.5
- High7.2Unauthenticated Stored Cross-Site Scripting
≤2.3.4Update to 2.3.5
- Medium5.4Missing Authorization
≤2.3.1Update to 2.3.2
- Medium4.3Missing Authorization via toggle_debugging
≤2.3.1Update to 2.3.2
Timeline
CVE published
Severity medium, CVSS 5.3
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.