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.
CVE-2026-9016 is a medium severity with CVSS 5.3 Vulnerability issue affecting the Plugin Debug Log Manager – Conveniently Monitor and Inspect Errors. It affects Versions up to 2.5.0 and is fixed in 2.5.1.
Use the related hub and response guides to connect this CVE-2026-9016 report with patch validation, scanner checks, and site hardening work.
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CVE-2026-9016 is tracked for the Plugin Debug Log Manager – Conveniently Monitor and Inspect Errors as medium severity with CVSS 5.3. The affected range is Versions up to 2.5.0. Update Debug Log Manager – Conveniently Monitor and Inspect Errors to 2.5.1 or newer where that version is compatible with the site.
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Affected version data gives operators a concrete comparison point against installed WordPress software.
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External references are available for source validation, advisory review, and incident notes.
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Inventory the installed Plugin package and compare its version with Versions up to 2.5.0.
Confirm Debug Log Manager – Conveniently Monitor and Inspect Errors is updated to 2.5.1 or newer.
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After patching, re-run vulnerability monitoring and keep the related plugin or theme hub under review for follow-up CVEs.
| Software Type | Plugin |
|---|---|
| Software Slug |
debug-log-manager
View on wordpress.org
|
| CVE | CVE-2026-9016 |
| Patched Versions |
2.5.1
|
| Affected Versions |
Versions up to 2.5.0
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
Debug Log Manager <= 2.3.4 - Unauthenticated Stored Cross-Site Scripting
Debug Log Manager <= 2.3.4 - Unauthenticated Stored Cross-Site Scripting
Debug Log Manager <= 2.3.1 - Unauthenticated Stored Cross-Site Scripting
Debug Log Manager <= 2.3.1 - Missing Authorization
Debug Log Manager <= 2.2.2 - Directory Listing to Sensitive Information Disclosure
Debug Log Manager <= 2.3.1 - Missing Authorization via toggle_debugging
Debug Log Manager <= 2.2.0 - Cross-Site Request Forgery
Debug Log Manager <= 2.2.1 - Missing Authorization
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