CVE-2026-19416

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

Score 4.3 from GitHub Security Advisory published 2026-08-19. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: None knownExposed: 0

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

The KiviCare WordPress plugin before 4.5.4 does not verify that the requesting user owns the appointment being modified, allowing authenticated patient-level users to cancel and reschedule other patients' appointments.

CVSS v3
4.3
EG Score
4.3(medium)
EG Risk
19(Track)
EG Risk 19/100SSVC: 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
Severity43% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
9%
KEV
Not listed

Published

August 19, 2026

Last Modified

August 26, 2026

Advisory Details (1)

Auto-updated Aug 19, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

KiviCare < 4.5.4 – Patient+ Cross-Patient Appointment Modification via IDOR | CVE 2026-19416 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/ef2aa44b-3624-4e6d-9b25-e33d4a1a21d2/

Vendor Advisories for CVE-2026-19416(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 15× in last 7d / 71× 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. 2026-09-20 02:57 UTCEG score recompute
  2. 2026-09-20 02:57 UTCGHSA enrichment
  3. 2026-09-19 00:42 UTCEG score recompute
  4. 2026-09-19 00:42 UTCGHSA enrichment
  5. 2026-09-18 19:27 UTCEPSS rescore
  6. 2026-09-17 22:26 UTCEG score recompute
  7. 2026-09-17 22:26 UTCGHSA enrichment
  8. 2026-09-16 20:08 UTCEG score recompute
  9. 2026-09-16 20:08 UTCGHSA enrichment
  10. 2026-09-16 14:07 UTCEPSS rescore
  11. 2026-09-16 05:14 UTCEPSS rescore
  12. 2026-09-15 16:15 UTCEG score recompute
  13. 2026-09-15 16:15 UTCGHSA enrichment
  14. 2026-09-14 14:00 UTCEG score recompute
  15. 2026-09-14 14:00 UTCGHSA enrichment
  16. 2026-09-13 16:46 UTCEPSS rescore
  17. 2026-09-13 11:45 UTCEG score recompute
  18. 2026-09-13 11:45 UTCGHSA enrichment
  19. 2026-09-12 15:00 UTCEPSS rescore
  20. 2026-09-12 09:30 UTCEG score recompute
  21. 2026-09-12 09:30 UTCGHSA enrichment
  22. 2026-09-11 14:52 UTCEPSS rescore
  23. 2026-09-11 09:36 UTCEPSS rescore
  24. 2026-09-11 07:14 UTCEG score recompute
  25. 2026-09-11 07:14 UTCGHSA enrichment
Show 61 more
  1. 2026-09-10 09:34 UTCEPSS rescore
  2. 2026-09-10 04:59 UTCGHSA enrichment
  3. 2026-09-09 02:43 UTCEG score recompute
  4. 2026-09-09 02:43 UTCGHSA enrichment
  5. 2026-09-08 22:00 UTCEPSS rescore
  6. 2026-09-07 23:02 UTCEG score recompute
  7. 2026-09-07 23:02 UTCGHSA enrichment
  8. 2026-09-07 16:01 UTCEPSS rescore
  9. 2026-09-06 20:47 UTCEG score recompute
  10. 2026-09-06 20:47 UTCGHSA enrichment
  11. 2026-09-06 13:47 UTCEPSS rescore
  12. 2026-09-05 18:31 UTCEG score recompute
  13. 2026-09-05 18:31 UTCGHSA enrichment
  14. 2026-09-04 16:16 UTCEG score recompute
  15. 2026-09-04 16:16 UTCGHSA enrichment
  16. 2026-09-04 05:06 UTCEPSS rescore
  17. 2026-09-03 14:00 UTCEG score recompute
  18. 2026-09-03 14:00 UTCGHSA enrichment
  19. 2026-09-02 14:11 UTCEPSS rescore
  20. 2026-09-02 11:43 UTCEG score recompute
  21. 2026-09-02 11:43 UTCGHSA enrichment
  22. 2026-09-01 13:53 UTCEPSS rescore
  23. 2026-09-01 09:21 UTCEG score recompute
  24. 2026-09-01 09:21 UTCGHSA enrichment
  25. 2026-09-01 04:39 UTCEPSS rescore
  26. 2026-08-31 07:05 UTCEG score recompute
  27. 2026-08-31 07:05 UTCGHSA enrichment
  28. 2026-08-30 19:17 UTCEPSS rescore
  29. 2026-08-30 04:48 UTCEG score recompute
  30. 2026-08-30 04:48 UTCGHSA enrichment
  31. 2026-08-30 01:22 UTCEPSS rescore
  32. 2026-08-29 02:32 UTCEG score recompute
  33. 2026-08-29 02:32 UTCGHSA enrichment
  34. 2026-08-28 21:41 UTCEPSS rescore
  35. 2026-08-27 19:13 UTCEG score recompute
  36. 2026-08-27 19:13 UTCGHSA enrichment
  37. 2026-08-27 14:25 UTCEPSS rescore
  38. 2026-08-26 16:53 UTCEG score recompute
  39. 2026-08-26 16:53 UTCGHSA enrichment
  40. 2026-08-26 14:46 UTCEPSS rescore
  41. 2026-08-26 06:55 UTCGHSA enrichment
  42. 2026-08-25 04:40 UTCEG score recompute
  43. 2026-08-25 04:40 UTCGHSA enrichment
  44. 2026-08-24 02:25 UTCGHSA enrichment
  45. 2026-08-23 00:10 UTCEG score recompute
  46. 2026-08-23 00:10 UTCGHSA enrichment
  47. 2026-08-21 23:49 UTCEPSS rescore
  48. 2026-08-21 21:54 UTCEG score recompute
  49. 2026-08-21 21:54 UTCGHSA enrichment
  50. 2026-08-20 22:55 UTCEPSS rescore
  51. 2026-08-20 19:39 UTCEG score recompute
  52. 2026-08-20 19:39 UTCGHSA enrichment
  53. 2026-08-19 17:24 UTCEG score recompute
  54. 2026-08-19 17:24 UTCGHSA enrichment
  55. 2026-08-19 17:03 UTCEPSS rescore
  56. 2026-08-19 16:44 UTCEG score recompute▲ 4.30
  57. 2026-08-19 16:43 UTCGHSA enrichment
  58. 2026-08-19 16:43 UTCMITRE cvelistV5CVSS v3 → 4.3 · severity → MEDIUM
  59. 2026-08-19 06:21 UTCNVD update
  60. 2026-08-19 06:17 UTCEG score recompute
  61. 2026-08-19 06:17 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19416?
CVE-2026-19416 is a medium vulnerability published on August 19, 2026. The KiviCare WordPress plugin before 4.5.4 does not verify that the requesting user owns the appointment being modified, allowing authenticated patient-level users to cancel and reschedule other patients' appointments.
When was CVE-2026-19416 disclosed?
CVE-2026-19416 was first published in the National Vulnerability Database on August 19, 2026, with the most recent update on August 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19416 actively exploited?
CVE-2026-19416 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 91.1% of all scored CVEs.
What is the CVSS score of CVE-2026-19416?
CVE-2026-19416 has a CVSS v3.1 base score of 4.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-19416?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19416, 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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