CVE-2026-9016
Debug Log Manager <= 2.5.0 - Unauthenticated Improper Output Neutralization for Logs via log_js_errors AJAX Action
- Published
- Updated
- Reserved
- Assigned by
- Wordfence
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| WordfenceCNA (assigner) | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| NVDNVD · Deferred | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.26% · top 82% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Weakness
Affected products
qriouslad · Debug Log Manager – Conveniently Monitor and Inspect Errors
- affected ≤ 2.5.0
References (6)
- https://www.wordfence.com/threat-intel/vulnerabilities/id/25abca87-1be2-427e-ab01-377d52917052?source=cve (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/debug-log-manager/tags/2.4.3/classes/class-debug-log.php#L1961 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/debug-log-manager/tags/2.4.3/classes/class-debug-log.php#L1947 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/debug-log-manager/tags/2.4.3/bootstrap.php#L123 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/debug-log-manager/tags/2.4.3/bootstrap.php#L556 (opens in a new tab)
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3543321%40debug-log-manager&new=3543321%40debug-log-manager&sfp_email=&sfph_mail= (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-9016)Record last updated .