CVE-2026-9016
Debug Log Manager <= 2.5.0 - Unauthenticated Improper Output Neutralization for Logs via log_js_errors AJAX Action
No known exploitation. EPSS puts it in the 38th percentile. No fix published yet.
What to do
No fixed build or workaround is published yet. Limit exposure and watch for a patch.
- qriouslad Debug Log Manager – Conveniently Monitor and Inspect ErrorsAffected: ≤ 2.5.0Upgrade to: after 2.5.0Stated by: CVE record
Versions as the sources state them. Full version matrix after sign-in
What it is
From the CVE record
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.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.4% chance of exploitation activity in the next 30 days, which ranks it in the 38th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
4 events over 47 days, from the signal feeds we watch.
- Record updated
- Record updated
- Publishedweakness classified
Affected products
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Scored 5.3 by NVD.
How it is reached
- Attack Vector NetworkExploitable remotely over the network without any special conditions
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- Privileges Required NoneNo authentication required — anyone can exploit this
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality NoneNo confidentiality impact
- Integrity LowData modification is possible but limited in scope or consequence
- Availability NoneNo availability impact
Weaknesses
Sources
References in the record
- plugins.trac.wordpress.org/browser/debug-log-manager/tags/2.4.3/bootstrap.php
- plugins.trac.wordpress.org/browser/debug-log-manager/tags/2.4.3/bootstrap.php
- plugins.trac.wordpress.org/browser/debug-log-manager/tags/2.4.3/classes/class-debug-log.php
And 3 more references. See all after sign-in
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