CVE-2016-20070

MEDIUMPre-NVD 6.46.4—
EchelonGraph scoreMEDIUM confidence

Score 6.4 from GitHub Security Advisory published 2026-06-15. the CNA's CVSS baseline 6.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this weekElevated
6.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.4Exploit: Elevated riskExposed: 0

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

WordPress Booking Calendar Contact Form 1.0.23 contains privilege escalation and stored cross-site scripting vulnerabilities that allow authenticated users to modify plugin options and inject malicious scripts by failing to verify user privileges and sanitize input parameters. Attackers with subscriber-level accounts can inject XSS payloads through parameters like price, name, calendar_language, and email_confirmation_to_user via admin-ajax.php and admin.php endpoints to execute arbitrary JavaScript in administrator browsers.

CVSS v3
6.4
EG Score
6.4(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: Track

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
Severity64% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

June 15, 2026

Last Modified

July 15, 2026

Advisory Details (2)

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

WordPress Booking Calendar Contact Form 1.0.23 Privilege Escalation Stored XSS | Advisories | VulnCheck

https://www.vulncheck.com/advisories/wordpress-booking-calendar-contact-form-privilege-escalation-stored-xss
generic

Boost your WordPress - Plugins for WordPress

http://wordpress.dwbooster.com/

Vendor Advisories for CVE-2016-20070(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 / 32× 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 175 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2016-20070?
CVE-2016-20070 is a medium vulnerability published on June 15, 2026. WordPress Booking Calendar Contact Form 1.0.23 contains privilege escalation and stored cross-site scripting vulnerabilities that allow authenticated users to modify plugin options and inject malicious scripts by failing to verify user privileges and sanitize input parameters. Attackers with…
When was CVE-2016-20070 disclosed?
CVE-2016-20070 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-2016-20070 actively exploited?
CVE-2016-20070 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 86.8% of all scored CVEs.
What is the CVSS score of CVE-2016-20070?
CVE-2016-20070 has a CVSS v4.0 base score of 6.4 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2016-20070?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-20070, 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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