CVE-2016-20084

HIGHPre-NVD 7.27.2—
EchelonGraph scoreHIGH confidence

Score 7.2 from GitHub Security Advisory published 2026-06-15. the CNA's CVSS baseline 7.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this weekElevated
7.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.2Exploit: NoneExposed: 0

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

WordPress appointment-booking-calendar 1.1.24 contains multiple privilege escalation vulnerabilities that allow unauthenticated attackers to modify calendar settings and inject persistent cross-site scripting payloads through the admin.php page parameters. Attackers can inject malicious JavaScript into the 'ict' and 'ics' options or the calendar 'name' parameter via GET requests to execute arbitrary scripts when the calendar is displayed or accessed in the administration interface.

CVSS v3
7.2
EG Score
7.2(high)
EPSS
15.6%
KEV
Not listed

Published

June 15, 2026

Last Modified

June 15, 2026

Advisory Details (1)

Auto-updated Jun 15, 2026
No patch confirmed yet.
generic

WordPress appointment-booking-calendar 1.1.24 Privilege Escalation XSS | Advisories | VulnCheck

https://www.vulncheck.com/advisories/wordpress-appointment-booking-calendar-privilege-escalation-xss

Vendor Advisories for CVE-2016-20084(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 34× in last 7d / 121× 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.

Showing the most recent 100 of 121 total refreshes for this CVE.

  1. 2026-07-07 00:26 UTCEG score recompute
  2. 2026-07-07 00:26 UTCGHSA enrichment
  3. 2026-07-06 16:24 UTCEPSS rescore
  4. 2026-07-06 16:24 UTCEPSS rescore
  5. 2026-07-06 02:20 UTCEPSS rescore
  6. 2026-07-06 02:20 UTCEPSS rescore
  7. 2026-07-05 21:59 UTCEG score recompute
  8. 2026-07-05 21:58 UTCGHSA enrichment
  9. 2026-07-05 10:52 UTCEG score recompute
  10. 2026-07-05 10:51 UTCGHSA enrichment
  11. 2026-07-05 02:27 UTCEPSS rescore
  12. 2026-07-04 23:44 UTCEG score recompute
  13. 2026-07-04 23:44 UTCGHSA enrichment
  14. 2026-07-04 12:35 UTCEG score recompute
  15. 2026-07-04 12:35 UTCGHSA enrichment
  16. 2026-07-04 06:28 UTCEPSS rescore
  17. 2026-07-04 01:25 UTCEG score recompute
  18. 2026-07-04 01:25 UTCGHSA enrichment
  19. 2026-07-03 14:18 UTCEG score recompute
  20. 2026-07-03 14:18 UTCGHSA enrichment
  21. 2026-07-03 00:40 UTCEG score recompute
  22. 2026-07-03 00:40 UTCGHSA enrichment
  23. 2026-07-02 13:29 UTCEG score recompute
  24. 2026-07-02 13:29 UTCGHSA enrichment
  25. 2026-07-02 02:14 UTCEG score recompute
Show 75 more
  1. 2026-07-02 02:13 UTCGHSA enrichment
  2. 2026-07-01 15:06 UTCEG score recompute
  3. 2026-07-01 15:05 UTCGHSA enrichment
  4. 2026-07-01 15:02 UTCEPSS rescore
  5. 2026-07-01 03:58 UTCEG score recompute
  6. 2026-07-01 03:58 UTCGHSA enrichment
  7. 2026-06-30 23:19 UTCEPSS rescore
  8. 2026-06-30 16:51 UTCEG score recompute
  9. 2026-06-30 16:51 UTCGHSA enrichment
  10. 2026-06-30 05:43 UTCEG score recompute
  11. 2026-06-30 05:43 UTCGHSA enrichment
  12. 2026-06-29 18:36 UTCEG score recompute
  13. 2026-06-29 18:36 UTCGHSA enrichment
  14. 2026-06-29 14:03 UTCEPSS rescore
  15. 2026-06-29 06:43 UTCEG score recompute
  16. 2026-06-29 06:43 UTCGHSA enrichment
  17. 2026-06-28 19:34 UTCEG score recompute
  18. 2026-06-28 19:34 UTCGHSA enrichment
  19. 2026-06-28 14:04 UTCEPSS rescore
  20. 2026-06-28 08:26 UTCEG score recompute
  21. 2026-06-28 08:26 UTCGHSA enrichment
  22. 2026-06-28 04:53 UTCEPSS rescore
  23. 2026-06-27 21:19 UTCEG score recompute
  24. 2026-06-27 21:19 UTCGHSA enrichment
  25. 2026-06-27 10:12 UTCEG score recompute
  26. 2026-06-27 10:12 UTCGHSA enrichment
  27. 2026-06-27 03:05 UTCEPSS rescore
  28. 2026-06-27 03:05 UTCEPSS rescore
  29. 2026-06-26 23:05 UTCEG score recompute
  30. 2026-06-26 23:05 UTCGHSA enrichment
  31. 2026-06-26 11:58 UTCEG score recompute
  32. 2026-06-26 11:58 UTCGHSA enrichment
  33. 2026-06-25 21:21 UTCEG score recompute
  34. 2026-06-25 21:21 UTCGHSA enrichment
  35. 2026-06-25 13:47 UTCEPSS rescore
  36. 2026-06-25 13:47 UTCEPSS rescore
  37. 2026-06-25 10:14 UTCEG score recompute
  38. 2026-06-25 10:14 UTCGHSA enrichment
  39. 2026-06-24 23:03 UTCEG score recompute
  40. 2026-06-24 23:03 UTCGHSA enrichment
  41. 2026-06-24 14:02 UTCEPSS rescore
  42. 2026-06-24 14:02 UTCEPSS rescore
  43. 2026-06-24 11:55 UTCEG score recompute
  44. 2026-06-24 11:55 UTCGHSA enrichment
  45. 2026-06-24 00:45 UTCEG score recompute
  46. 2026-06-24 00:45 UTCGHSA enrichment
  47. 2026-06-23 21:30 UTCEPSS rescore
  48. 2026-06-23 13:30 UTCEG score recompute
  49. 2026-06-23 13:30 UTCGHSA enrichment
  50. 2026-06-23 02:12 UTCEG score recompute
  51. 2026-06-23 02:12 UTCGHSA enrichment
  52. 2026-06-22 15:05 UTCEG score recompute
  53. 2026-06-22 15:05 UTCGHSA enrichment
  54. 2026-06-22 15:01 UTCGHSA enrichment
  55. 2026-06-22 14:23 UTCEPSS rescore
  56. 2026-06-22 03:49 UTCEG score recompute
  57. 2026-06-22 03:49 UTCGHSA enrichment
  58. 2026-06-21 16:42 UTCEG score recompute
  59. 2026-06-21 16:42 UTCGHSA enrichment
  60. 2026-06-21 14:54 UTCEPSS rescore
  61. 2026-06-21 14:54 UTCEPSS rescore
  62. 2026-06-21 04:42 UTCEG score recompute
  63. 2026-06-21 04:42 UTCGHSA enrichment
  64. 2026-06-21 01:57 UTCEPSS rescore
  65. 2026-06-21 01:57 UTCEPSS rescore
  66. 2026-06-20 17:05 UTCEG score recompute
  67. 2026-06-20 17:05 UTCGHSA enrichment
  68. 2026-06-20 05:55 UTCEG score recompute
  69. 2026-06-20 05:55 UTCGHSA enrichment
  70. 2026-06-19 19:23 UTCEPSS rescore
  71. 2026-06-19 19:23 UTCEPSS rescore
  72. 2026-06-19 18:28 UTCEG score recompute
  73. 2026-06-19 18:28 UTCGHSA enrichment
  74. 2026-06-19 07:20 UTCEG score recompute
  75. 2026-06-19 07:20 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2016-20084?
CVE-2016-20084 is a high vulnerability published on June 15, 2026. WordPress appointment-booking-calendar 1.1.24 contains multiple privilege escalation vulnerabilities that allow unauthenticated attackers to modify calendar settings and inject persistent cross-site scripting payloads through the admin.php page parameters. Attackers can inject malicious JavaScript…
When was CVE-2016-20084 disclosed?
CVE-2016-20084 was first published in the National Vulnerability Database on June 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-20084 actively exploited?
CVE-2016-20084 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 15.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2016-20084?
CVE-2016-20084 has a CVSS v4.0 base score of 7.2 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2016-20084?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-20084, 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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