CVE-2023-3287Network attack vector

Privilege escalation via unchecked administrator creation

Published Jul 9, 2024 · Updated Aug 2, 2024

Authorization bypass in Easy!Appointments before 1.5.0 allows remote authenticated users to create administrator accounts via POST /admins. The API endpoint accepts an administrator record from a low-privileged session without enforcing the role needed to create administrators. Any low-privileged account with API access can establish a new administrator identity and then exercise administrative control.

CVSS severity9.9
Critical
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Easy!Appointments before 1.5.0 allows remote authenticated users to create administrator accounts via POST /admins. The API endpoint accepts an administrator record from a low-privileged session without enforcing the role needed to create administrators. Any low-privileged account with API access can establish a new administrator identity and then exercise administrative control.

The record

CVE
CVE-2023-3287
Published
Jul 9, 2024
Updated
Aug 2, 2024
Vendor
Alex Tselegidis
Product
Easy!Appointments
Classifications
CWE-639, T1136
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=0 <1.5.0
  2. Affected versionversion=* <1.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Alex Tselegidis · Easy!Appointmentsversion=0 <1.5.0; version=* <1.5.0

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.9Palo Alto Networks, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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
T1136Create Account

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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