CVE-2026-9016

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-06-06. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
5.3
EG Score
5.3(high)
EPSS
17.5%
KEV
Not listed

Published

June 6, 2026

Last Modified

June 8, 2026

References (6)

Vendor Advisories for CVE-2026-9016(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 20× in last 7d / 89× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 02:23 UTCEPSS rescore
  3. 2026-07-05 20:04 UTCEG score recompute
  4. 2026-07-05 20:04 UTCGHSA enrichment
  5. 2026-07-05 02:31 UTCEPSS rescore
  6. 2026-07-05 02:30 UTCEPSS rescore
  7. 2026-07-04 20:21 UTCEG score recompute
  8. 2026-07-04 20:21 UTCGHSA enrichment
  9. 2026-07-04 06:31 UTCEPSS rescore
  10. 2026-07-04 06:31 UTCEPSS rescore
  11. 2026-07-03 16:34 UTCEG score recompute
  12. 2026-07-03 16:34 UTCGHSA enrichment
  13. 2026-07-02 16:20 UTCEG score recompute
  14. 2026-07-02 16:20 UTCGHSA enrichment
  15. 2026-07-01 16:34 UTCEG score recompute
  16. 2026-07-01 16:34 UTCGHSA enrichment
  17. 2026-07-01 15:07 UTCEPSS rescore
  18. 2026-06-30 23:22 UTCEPSS rescore
  19. 2026-06-30 16:51 UTCEG score recompute
  20. 2026-06-30 16:51 UTCGHSA enrichment
  21. 2026-06-29 15:38 UTCEG score recompute
  22. 2026-06-29 15:38 UTCGHSA enrichment
  23. 2026-06-29 14:06 UTCEPSS rescore
  24. 2026-06-28 15:54 UTCEG score recompute
  25. 2026-06-28 15:54 UTCGHSA enrichment
Show 68 more
  1. 2026-06-28 14:07 UTCEPSS rescore
  2. 2026-06-28 04:56 UTCEPSS rescore
  3. 2026-06-27 16:09 UTCEG score recompute
  4. 2026-06-27 16:09 UTCGHSA enrichment
  5. 2026-06-27 03:08 UTCEPSS rescore
  6. 2026-06-26 16:26 UTCEG score recompute
  7. 2026-06-26 16:26 UTCGHSA enrichment
  8. 2026-06-25 16:44 UTCEG score recompute
  9. 2026-06-25 16:43 UTCGHSA enrichment
  10. 2026-06-25 13:50 UTCEPSS rescore
  11. 2026-06-24 16:59 UTCEG score recompute
  12. 2026-06-24 16:59 UTCGHSA enrichment
  13. 2026-06-24 14:05 UTCEPSS rescore
  14. 2026-06-23 21:33 UTCEPSS rescore
  15. 2026-06-23 17:16 UTCEG score recompute
  16. 2026-06-23 17:16 UTCGHSA enrichment
  17. 2026-06-22 14:25 UTCEPSS rescore
  18. 2026-06-22 14:24 UTCEG score recompute
  19. 2026-06-22 14:24 UTCGHSA enrichment
  20. 2026-06-21 14:56 UTCEPSS rescore
  21. 2026-06-21 08:00 UTCEG score recompute
  22. 2026-06-21 08:00 UTCGHSA enrichment
  23. 2026-06-21 01:59 UTCEPSS rescore
  24. 2026-06-20 08:16 UTCEG score recompute
  25. 2026-06-20 08:16 UTCGHSA enrichment
  26. 2026-06-19 19:26 UTCEPSS rescore
  27. 2026-06-19 01:52 UTCEG score recompute
  28. 2026-06-19 01:52 UTCGHSA enrichment
  29. 2026-06-18 17:52 UTCEPSS rescore
  30. 2026-06-18 01:25 UTCEG score recompute
  31. 2026-06-18 01:25 UTCGHSA enrichment
  32. 2026-06-17 17:53 UTCEPSS rescore
  33. 2026-06-17 01:43 UTCEG score recompute
  34. 2026-06-17 01:43 UTCGHSA enrichment
  35. 2026-06-16 17:53 UTCEPSS rescore
  36. 2026-06-16 01:59 UTCEG score recompute
  37. 2026-06-16 01:59 UTCGHSA enrichment
  38. 2026-06-15 17:49 UTCEPSS rescore
  39. 2026-06-15 17:49 UTCEPSS rescore
  40. 2026-06-15 02:16 UTCEG score recompute
  41. 2026-06-15 02:16 UTCGHSA enrichment
  42. 2026-06-14 23:18 UTCEPSS rescore
  43. 2026-06-14 02:33 UTCEG score recompute
  44. 2026-06-14 02:33 UTCGHSA enrichment
  45. 2026-06-13 23:00 UTCEPSS rescore
  46. 2026-06-13 02:49 UTCEG score recompute
  47. 2026-06-13 02:49 UTCGHSA enrichment
  48. 2026-06-12 23:12 UTCEPSS rescore
  49. 2026-06-12 23:12 UTCEPSS rescore
  50. 2026-06-12 03:05 UTCEG score recompute
  51. 2026-06-12 03:05 UTCGHSA enrichment
  52. 2026-06-11 14:00 UTCEPSS rescore
  53. 2026-06-11 03:22 UTCEG score recompute
  54. 2026-06-11 03:22 UTCGHSA enrichment
  55. 2026-06-10 22:19 UTCEPSS rescore
  56. 2026-06-10 13:22 UTCEPSS rescore
  57. 2026-06-10 03:39 UTCEG score recompute
  58. 2026-06-10 03:39 UTCGHSA enrichment
  59. 2026-06-09 03:57 UTCEG score recompute
  60. 2026-06-09 03:56 UTCGHSA enrichment
  61. 2026-06-08 14:17 UTCEPSS rescore
  62. 2026-06-08 04:13 UTCEG score recompute
  63. 2026-06-08 04:13 UTCGHSA enrichment
  64. 2026-06-07 15:25 UTCEPSS rescore
  65. 2026-06-07 04:30 UTCEG score recompute
  66. 2026-06-07 04:30 UTCGHSA enrichment
  67. 2026-06-06 13:47 UTCEPSS rescore
  68. 2026-06-06 04:48 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-9016?
CVE-2026-9016 is a medium vulnerability published on June 6, 2026. 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 logjserrors() AJAX handler being registered for unauthenticated users via…
When was CVE-2026-9016 disclosed?
CVE-2026-9016 was first published in the National Vulnerability Database on June 6, 2026, with the most recent update on June 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9016 actively exploited?
CVE-2026-9016 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 17.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-9016?
CVE-2026-9016 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-9016?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9016, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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