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Simply Schedule Appointments CVE-2022-2373

MEDIUM
Missing Authorization (CWE-862)
2022-08-29 contact@wpscan.com
5.3
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization checks on every request
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 5.3 (MEDIUM). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available.

Exploit ScenarioDerived

A remote attacker could access resources or perform actions without proper authorization checks by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 1.4% exploitation probability (EPSS)

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AnalysisAI

The Simply Schedule Appointments WordPress plugin before 1.5.7.7 is missing authorisation in a REST endpoint, allowing unauthenticated users to retrieve WordPress users details such as name and email. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement role-based access control, validate authorization on every request server-side, apply principle of least privilege.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Missing Authorization (CWE-862), which allows attackers to access resources or perform actions without proper authorization checks. The Simply Schedule Appointments WordPress plugin before 1.5.7.7 is missing authorisation in a REST endpoint, allowing unauthenticated users to retrieve WordPress users details such as name and email address Affected products include: Nsqua Simply Schedule Appointments. Version information: before 1.5.7.7.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 5.3 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

DescriptionNVD

The Simply Schedule Appointments WordPress plugin before 1.5.7.7 is missing authorisation in a REST endpoint, allowing unauthenticated users to retrieve WordPress users details such as name and email address

Threat Intelligence Overview

EPSS Score
1.4%
Top 30% exploitable
Exploit
POC
Public exploit code exists
Data Quality
2 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC Yes
EPSS 1.4%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
Medium

Priority Score

47
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +26
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)NVD

cpe:2.3:a:nsqua:simply_schedule_appointments:*:*:*:*:*:wordpress:*:*
CVE-2026-16540 HIGH POC
7.5 Aug 02

Simply Schedule Appointments WordPress plugin before 1.6.12.6 exposes all site appointment records to unauthenticated us

CVE-2024-7129 HIGH POC
7.2 Sep 13

The Appointment Booking Calendar WordPress plugin before 1.6.7.43 does not escape template syntax provided via user inpu

CVE-2026-15254 MEDIUM POC
6.5 Aug 03

Broken access control in Simply Schedule Appointments WordPress plugin before 1.6.12.11 exposes all customer appointment

CVE-2026-13400 MEDIUM POC
6.1 Jul 27

Stored Cross-Site Scripting in Simply Schedule Appointments up to 1.6.12.2 allows unauthenticated attackers to inject ar

CVE-2026-39493 CRITICAL
9.3 Jun 15

Unauthenticated SQL injection in the Simply Schedule Appointments WordPress plugin (versions ≤ 1.6.9.27) allows remote a

CVE-2026-65508 CRITICAL
9.3 Aug 06

Unauthenticated SQL injection in the Simply Schedule Appointments WordPress plugin (versions up to and including 1.6.12.

CVE-2024-2341 HIGH
8.8 Apr 09

The Appointment Booking Calendar - Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to SQL

CVE-2024-2342 HIGH
8.8 Apr 09

The Appointment Booking Calendar - Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to SQL

CVE-2026-84764 HIGH
8.8 Sep 02

Cross-site request forgery in the Simply Schedule Appointments WordPress plugin (versions ≤ 1.6.12.23) enables an unauth

CVE-2024-7877 MEDIUM POC
4.8 Nov 05

The Appointment Booking Calendar - Simply Schedule Appointments Booking Plugin WordPress plugin before 1.6.7.55 does not

CVE-2024-7876 MEDIUM POC
4.8 Nov 05

The Appointment Booking Calendar - Simply Schedule Appointments Booking Plugin WordPress plugin before 1.6.7.55 does not

CVE-2022-2374 MEDIUM POC
4.8 Aug 29

The Simply Schedule Appointments WordPress plugin before 1.5.7.7 does not sanitise and escape some of its settings, whic

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