CVE-2016-20084

HIGHPre-NVD 7.27.2—
EchelonGraph scoreMEDIUM 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
7.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.2Exploit: Elevated riskExposed: 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(medium)
EG Risk
63(Attend)
EG Risk 63/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity72% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
16%
KEV
Not listed

Published

June 15, 2026

Last Modified

July 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 6× in last 7d / 35× 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 234 total refreshes for this CVE.

  1. 2026-09-15 03:05 UTCEPSS rescore
  2. 2026-09-14 03:47 UTCEG score recompute
  3. 2026-09-14 03:47 UTCGHSA enrichment
  4. 2026-09-13 16:41 UTCEPSS rescore
  5. 2026-09-12 14:55 UTCEPSS rescore
  6. 2026-09-10 09:26 UTCEPSS rescore
  7. 2026-09-07 15:56 UTCEPSS rescore
  8. 2026-09-04 13:56 UTCEPSS rescore
  9. 2026-09-02 14:07 UTCEPSS rescore
  10. 2026-09-01 03:31 UTCEPSS rescore
  11. 2026-08-30 23:00 UTCEG score recompute
  12. 2026-08-30 23:00 UTCGHSA enrichment
  13. 2026-08-30 19:12 UTCEPSS rescore
  14. 2026-08-27 14:20 UTCEPSS rescore
  15. 2026-08-26 14:41 UTCEPSS rescore
  16. 2026-08-25 13:44 UTCEPSS rescore
  17. 2026-08-24 23:39 UTCEG score recompute
  18. 2026-08-24 23:39 UTCGHSA enrichment
  19. 2026-08-23 20:57 UTCGHSA enrichment
  20. 2026-08-23 09:49 UTCEG score recompute
  21. 2026-08-23 09:49 UTCGHSA enrichment
  22. 2026-08-23 00:13 UTCEPSS rescore
  23. 2026-08-21 23:44 UTCEPSS rescore
  24. 2026-08-21 18:57 UTCGHSA enrichment
  25. 2026-08-21 07:27 UTCEG score recompute
Show 75 more
  1. 2026-08-21 07:27 UTCGHSA enrichment
  2. 2026-08-20 19:48 UTCGHSA enrichment
  3. 2026-08-20 08:42 UTCEG score recompute
  4. 2026-08-20 08:42 UTCGHSA enrichment
  5. 2026-08-19 16:59 UTCEPSS rescore
  6. 2026-08-19 13:16 UTCEG score recompute
  7. 2026-08-19 13:15 UTCGHSA enrichment
  8. 2026-08-18 13:43 UTCEPSS rescore
  9. 2026-08-17 13:42 UTCEPSS rescore
  10. 2026-08-17 09:36 UTCGHSA enrichment
  11. 2026-08-16 22:30 UTCEG score recompute
  12. 2026-08-16 22:30 UTCGHSA enrichment
  13. 2026-08-16 14:51 UTCEPSS rescore
  14. 2026-08-16 10:22 UTCEG score recompute
  15. 2026-08-16 10:22 UTCGHSA enrichment
  16. 2026-08-16 02:09 UTCEPSS rescore
  17. 2026-08-15 23:16 UTCGHSA enrichment
  18. 2026-08-15 10:21 UTCEG score recompute
  19. 2026-08-15 10:21 UTCGHSA enrichment
  20. 2026-08-15 01:25 UTCEPSS rescore
  21. 2026-08-14 20:17 UTCGHSA enrichment
  22. 2026-08-14 09:11 UTCGHSA enrichment
  23. 2026-08-13 22:04 UTCEG score recompute
  24. 2026-08-13 22:04 UTCGHSA enrichment
  25. 2026-08-13 05:42 UTCGHSA enrichment
  26. 2026-08-12 18:35 UTCEG score recompute
  27. 2026-08-12 18:35 UTCGHSA enrichment
  28. 2026-08-12 13:46 UTCEPSS rescore
  29. 2026-08-12 07:29 UTCGHSA enrichment
  30. 2026-08-11 20:14 UTCEG score recompute
  31. 2026-08-11 20:14 UTCGHSA enrichment
  32. 2026-08-11 13:36 UTCEPSS rescore
  33. 2026-08-11 09:07 UTCGHSA enrichment
  34. 2026-08-10 22:01 UTCEG score recompute
  35. 2026-08-10 22:01 UTCGHSA enrichment
  36. 2026-08-10 10:55 UTCGHSA enrichment
  37. 2026-08-09 23:47 UTCEG score recompute
  38. 2026-08-09 23:47 UTCGHSA enrichment
  39. 2026-08-09 13:42 UTCEPSS rescore
  40. 2026-08-09 12:41 UTCGHSA enrichment
  41. 2026-08-09 01:34 UTCEG score recompute
  42. 2026-08-09 01:34 UTCGHSA enrichment
  43. 2026-08-08 16:32 UTCEPSS rescore
  44. 2026-08-08 14:28 UTCGHSA enrichment
  45. 2026-08-08 03:21 UTCEG score recompute
  46. 2026-08-08 03:21 UTCGHSA enrichment
  47. 2026-08-07 16:14 UTCGHSA enrichment
  48. 2026-08-07 05:08 UTCGHSA enrichment
  49. 2026-08-06 18:01 UTCGHSA enrichment
  50. 2026-08-06 06:54 UTCGHSA enrichment
  51. 2026-08-05 19:47 UTCEG score recompute
  52. 2026-08-05 19:47 UTCGHSA enrichment
  53. 2026-08-05 19:12 UTCEPSS rescore
  54. 2026-08-04 15:43 UTCEG score recompute
  55. 2026-08-04 15:43 UTCGHSA enrichment
  56. 2026-08-04 15:04 UTCEPSS rescore
  57. 2026-08-04 10:32 UTCEPSS rescore
  58. 2026-08-03 20:08 UTCEG score recompute
  59. 2026-08-03 20:08 UTCGHSA enrichment
  60. 2026-08-03 08:58 UTCGHSA enrichment
  61. 2026-08-02 18:15 UTCGHSA enrichment
  62. 2026-08-02 07:09 UTCEG score recompute
  63. 2026-08-02 07:09 UTCGHSA enrichment
  64. 2026-08-02 02:22 UTCEPSS rescore
  65. 2026-08-01 20:02 UTCGHSA enrichment
  66. 2026-08-01 08:55 UTCEG score recompute
  67. 2026-08-01 08:55 UTCGHSA enrichment
  68. 2026-08-01 04:11 UTCEPSS rescore
  69. 2026-07-31 13:20 UTCGHSA enrichment
  70. 2026-07-30 23:56 UTCEG score recompute
  71. 2026-07-30 23:56 UTCGHSA enrichment
  72. 2026-07-30 16:23 UTCEPSS rescore
  73. 2026-07-30 05:13 UTCEG score recompute
  74. 2026-07-30 05:13 UTCGHSA enrichment
  75. 2026-07-30 01:26 UTCEPSS rescore

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, with the most recent update on July 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 0% probability of exploitation in the next 30 days, which ranks it in the top 84.2% of all scored CVEs.
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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