CVE-2026-11866

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreHIGH 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(high)
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
1%
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 18× in last 7d / 33× 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. 2026-08-01 06:32 UTCEG score recompute
  2. 2026-08-01 06:31 UTCGHSA enrichment
  3. 2026-08-01 04:15 UTCEPSS rescore
  4. 2026-07-31 07:16 UTCEG score recompute
  5. 2026-07-31 07:16 UTCGHSA enrichment
  6. 2026-07-30 16:27 UTCEPSS rescore
  7. 2026-07-30 08:08 UTCEG score recompute
  8. 2026-07-30 08:08 UTCGHSA enrichment
  9. 2026-07-30 01:30 UTCEPSS rescore
  10. 2026-07-29 08:51 UTCEG score recompute
  11. 2026-07-29 08:51 UTCGHSA enrichment
  12. 2026-07-28 15:36 UTCEPSS rescore
  13. 2026-07-28 09:45 UTCEG score recompute
  14. 2026-07-28 09:45 UTCGHSA enrichment
  15. 2026-07-27 14:13 UTCEPSS rescore
  16. 2026-07-27 10:39 UTCGHSA enrichment
  17. 2026-07-26 11:27 UTCEG score recompute
  18. 2026-07-26 11:27 UTCGHSA enrichment
  19. 2026-07-25 14:17 UTCEPSS rescore
  20. 2026-07-24 14:17 UTCEPSS rescore
  21. 2026-07-23 14:18 UTCEPSS rescore
  22. 2026-07-23 03:04 UTCEG score recompute
  23. 2026-07-22 14:08 UTCEPSS rescore
  24. 2026-07-21 15:24 UTCEPSS rescore
  25. 2026-07-20 17:08 UTCEPSS rescore
Show 8 more
  1. 2026-07-18 10:04 UTCEPSS rescore
  2. 2026-07-17 06:46 UTCEG score recompute▲ 5.40
  3. 2026-07-17 06:46 UTCGHSA enrichment
  4. 2026-07-16 17:02 UTCEPSS rescore
  5. 2026-07-16 15:53 UTCMITRE cvelistV5CVSS v3 → 5.4 · severity → MEDIUM
  6. 2026-07-16 08:27 UTCNVD update
  7. 2026-07-16 06:18 UTCEG score recompute
  8. 2026-07-16 06:18 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

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 99.2% 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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