CVE-2026-11866

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

Score 5.4 from GitHub Security Advisory published 2026-07-16. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: Elevated riskExposed: 0

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

The Appointment Booking Plugin WordPress plugin before 5.6.3 does not validate a CSRF nonce on several state-changing actions handled by its central request dispatcher, allowing attackers to perform privileged actions, such as overwriting the booking-form configuration or disconnecting the connected payment gateway, via Cross-Site Request Forgery against a logged-in administrator.

CVSS v3
5.4
EG Score
5.4(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity54% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

July 16, 2026

Last Modified

July 16, 2026

Advisory Details (1)

Auto-updated Jul 16, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

LatePoint < 5.6.3 – Multiple Privileged Actions via CSRF | CVE 2026-11866 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/84e936b8-1978-4dc3-aa40-5ce49bfdc445/

Vendor Advisories for CVE-2026-11866(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 10× in last 7d / 56× 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 117 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-11866?
CVE-2026-11866 is a medium vulnerability published on July 16, 2026. The Appointment Booking Plugin WordPress plugin before 5.6.3 does not validate a CSRF nonce on several state-changing actions handled by its central request dispatcher, allowing attackers to perform privileged actions, such as overwriting the booking-form configuration or disconnecting the…
When was CVE-2026-11866 disclosed?
CVE-2026-11866 was first published in the National Vulnerability Database on July 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-11866 actively exploited?
CVE-2026-11866 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 96.5% of all scored CVEs.
What is the CVSS score of CVE-2026-11866?
CVE-2026-11866 has a CVSS v3.1 base score of 5.4 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-11866?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-11866, 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.

Dependency Blast Radius

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