Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-55651— Easy!Appointments Vulnerable to Appointments Takeover via Excessive Data Exposure

Quick assessment

Affected
alextselegidis easyappointments
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Alex Tselegidis Easy!Appointments是Alex Tselegidis个人开发者的一个在线预约系统。 Alex Tselegidis Easy!Appointments 1.5.2版本存在信息泄露漏洞，该漏洞源于客户搜索端点数据过度暴露，可能导致已认证用户获取其他用户的预约散列值，进而修改或删除其他提供者的预约，造成预约接管。

CVSS 7.1 · High EPSS 0.18% · P8

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System

Affected Version Matrix 1

VendorProduct Version RangeStatus
alextselegidis easyappointments = 1.5.2 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-55651

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Easy!Appointments Vulnerable to Appointments Takeover via Excessive Data Exposure
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Alex Tselegidis Easy!Appointments 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Alex Tselegidis Easy!Appointments是Alex Tselegidis个人开发者的一个在线预约系统。 Alex Tselegidis Easy!Appointments 1.5.2版本存在信息泄露漏洞，该漏洞源于客户搜索端点数据过度暴露，可能导致已认证用户获取其他用户的预约散列值，进而修改或删除其他提供者的预约，造成预约接管。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
alextselegidis easyappointments = 1.5.2 -

II. Public POCs for CVE-2026-55651

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 9604 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-55651

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-55651 (1)

Same Patch Batch · alextselegidis · 2026-07-14 · 6 CVEs total

CVE-2026-52837 6.9 MEDIUM Easy!Appointments has unauthenticated customer PII disclosure on booking reschedule page
CVE-2026-52839 3.3 LOW Easy!Appointments appointments/store and appointments/update allow cross-provider appointm
CVE-2026-52841 3.1 LOW Easy!Appointments: Authorization bypass in Google OAuth provider binding lets any backend
CVE-2026-52840 2.7 LOW Easy!Appointments has server-side request forgery in CalDAV connection test that exposes t
CVE-2026-52838 2.6 LOW Easy!Appointments disable_booking_message rendered as raw HTML on public booking page — St

IV. Related Vulnerabilities

Same product: easyappointments
Same vendor: alextselegidis
Same weakness: CWE-200

V. Comments for CVE-2026-55651

No comments yet

Leave a comment