OAuth Vulnerability in Salon Booking System Plugin for WordPress
CVE-2026-17023

4.8MEDIUM

Key Information:

Vendor

WordPress
Status
Salon Booking System
Vendor
CVE Published:
10 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-17023?

The Salon Booking System WordPress plugin, up to version 10.30.33, is vulnerable to unauthorized access due to a lack of capability checks and OAuth state value validation during its Google Calendar authorization callback. This issue allows unauthenticated attackers to overwrite existing Google Calendar connection tokens, potentially hijacking the integration if the site has configured a Google OAuth client for its calendar feature.

Affected Version(s)

Salon Booking System 0 <= 10.30.33

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-17023 - Proof of Concept

References

https://wpscan.com/vulnerability/a116db0a-38ea-43e3-a9cd-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Daniel Dhaniswara
WPScan
.