CVE-2026-55651

Easy!Appointments Vulnerable to Appointments Takeover via Excessive Data Exposure

Published Jul 14, 2026 CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Description
Easy!Appointments is a self hosted appointment scheduler. In version 1.5.2, an Excessive Data Exposure vulnerability in the customers search endpoint allows an authenticated user to obtain appointment hashes belonging to other users.
Using these hashes, an attacker can modify or delete appointments of other providers, resulting in an Appointments Takeover. Version 1.6.0 fixes the issue.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-4vmm-5qvc-w5p7 Easy!Appointments Vulnerable to Appointments Takeover via Excessive Data Exposure
History
Type Values Removed Values Added
First Time appeared Alextselegidis
Alextselegidis easyappointments
Vendors & Products Alextselegidis
Alextselegidis easyappointments
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Easy!Appointments is a self hosted appointment scheduler. In version 1.5.2, an Excessive Data Exposure vulnerability in the customers search endpoint allows an authenticated user to obtain appointment hashes belonging to other users. Using these hashes, an attacker can modify or delete appointments of other providers, resulting in an Appointments Takeover. Version 1.6.0 fixes the issue.
Title Easy!Appointments Vulnerable to Appointments Takeover via Excessive Data Exposure
Weaknesses CWE-200
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jul 14, 2026, 4:00 PM
Reserved
Jun 16, 2026, 11:52 PM
Status
Deferred
Published
Jul 14, 2026, 4:17 PM
Modified
Oct 24, 2026, 9:10 PM