EUVD-2026-62289
GHSA-q77f-2653-fm5r
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Requires authenticated patient account (PR:L); no user interaction by a victim is needed; integrity impact only, no confidentiality or availability loss.
Primary rating from Vendor (wpscan).
CVSS VectorVendor: wpscan
Lifecycle Timeline
4DescriptionCVE.org
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.
AnalysisAI
Insecure Direct Object Reference in the KiviCare WordPress plugin before 4.5.4 allows authenticated patient-level users to cancel or reschedule appointments belonging to other patients. The plugin fails to verify ownership of the appointment resource before permitting modification, enabling horizontal privilege escalation between patient accounts. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid, authenticated patient-level account on the target KiviCare installation - unauthenticated access is not sufficient. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 4.3 (Medium) reflects limited integrity impact with no confidentiality or availability loss, but the vector string contains a notable inconsistency: the provided vector lists PR:N (no privileges required) alongside UI:R, yet the CVE description explicitly states exploitation requires an authenticated patient-level account - these signals conflict and the PR:N designation appears to be an error in the NVD-reported vector. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Update the KiviCare WordPress plugin to version 4.5.4 or later, which introduces ownership verification on appointment modification requests. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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