CVE-2026-52837Public exploitNetwork attack vector

Unauthenticated customer-record disclosure via reschedule hash

Published Jul 14, 2026 · Updated Jul 14, 2026

Information disclosure in Easy Appointments 1.5.2 and earlier allows remote attackers to read customer records via a reschedule URL. Booking::index() resolves the 12-character appointment_hash, loads an unfiltered ea_users customer row, and inlines it as customer_data JavaScript. Possession of a hash from a reschedule email, confirmation URL, or calendar link exposes contact, address, custom-field, and account metadata without authentication.

CVSS severity6.9
Medium
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Easy Appointments 1.5.2 and earlier allows remote attackers to read customer records via a reschedule URL. Booking::index() resolves the 12-character appointment_hash, loads an unfiltered ea_users customer row, and inlines it as customer_data JavaScript. Possession of a hash from a reschedule email, confirmation URL, or calendar link exposes contact, address, custom-field, and account metadata without authentication.

The record

CVE
CVE-2026-52837
Published
Jul 14, 2026
Updated
Jul 14, 2026
Vendor
Easy Appointments
Product
Easy Appointments
Classifications
CWE-639, CWE-200, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Easy Appointments · Easy Appointmentsversion=< 1.6.0

Published CVSS scores

6.9GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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