CVE-2023-3427Network attack vector

User metadata changes via missing nonce validation

Published Jun 28, 2023 · Updated Apr 8, 2026

Cross-site request forgery in Salon Booking System 8.4.7 and earlier allows remote attackers to alter WordPress user metadata via forged requests. The save_customer function accepts state-changing customer fields without validating a WordPress nonce, including fields controlling roles and arbitrary user metadata. Exploitation requires an administrator to submit the attacker-controlled request, enabling administrator demotion to customer or user-metadata overwrites.

CVSS severity5.4
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in Salon Booking System 8.4.7 and earlier allows remote attackers to alter WordPress user metadata via forged requests. The save_customer function accepts state-changing customer fields without validating a WordPress nonce, including fields controlling roles and arbitrary user metadata. Exploitation requires an administrator to submit the attacker-controlled request, enabling administrator demotion to customer or user-metadata overwrites.

The record

CVE
CVE-2023-3427
Published
Jun 28, 2023
Updated
Apr 8, 2026
Vendor
Salonbookingsystem OÜ
Product
Salon Booking System - Free Version
Classifications
CWE-352, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 28, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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=0 <=8.4.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Salonbookingsystem OÜ · Salon Booking System - Free Versionversion=0 <=8.4.7

Published CVSS scores

5.4WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A: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 exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1204.001Malicious Link

Public exploit references

No public exploit references are available in this record.

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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