CVE-2023-38050Network attack vector

Cross-user webhook access via unchecked record ownership

Published Jul 9, 2024 · Updated Aug 2, 2024

Broken object-level authorization in Easy!Appointments before 1.5.0 allows remote authenticated users to access and alter any user's webhooks. The GET, PUT, and DELETE /webhooks/{webhookId} handlers trust the caller-supplied webhook identifier without verifying ownership or authorization for the targeted record. Any low-privileged account with API access can read, modify, or delete another user's webhook records, including an administrator's records.

CVSS severity9.9
Critical
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Broken object-level authorization in Easy!Appointments before 1.5.0 allows remote authenticated users to access and alter any user's webhooks. The GET, PUT, and DELETE /webhooks/{webhookId} handlers trust the caller-supplied webhook identifier without verifying ownership or authorization for the targeted record. Any low-privileged account with API access can read, modify, or delete another user's webhook records, including an administrator's records.

The record

CVE
CVE-2023-38050
Published
Jul 9, 2024
Updated
Aug 2, 2024
Vendor
Alex Tselegidis
Product
Easy!Appointments
Classifications
CWE-639, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=* <1.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Alex Tselegidis · Easy!Appointmentsversion=* <1.5.0

Published CVSS scores

8.1NISTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
9.9Palo Alto Networks, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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