TI-2022-04040 Aliases CVE-2022-4417 GHSA-cp43-7gjw-vj3h

WP Cerber < 9.3.3 - User Enumeration Bypass via Rest API

MEDIUM 63Published 2023-01-02 · Updated 2025-04-10

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: Low · None · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

The WP Cerber Security, Anti-spam & Malware Scan WordPress plugin before 9.3.3 does not properly block access to the REST API users endpoint when the blog is in a subdirectory, which could allow attackers to bypass the restriction in place and list users

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00704 53rd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA and NVD

Fix Fixed WP Cerber Security, Anti-spam & Malware Scan (Unknown): 9.3.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Unknown	WP Cerber Security, Anti-spam & Malware Scan	before 9.3.3	9.3.3	Patch available	CNA

WP Cerber Security, Anti-spam & Malware Scan VendorUnknown Affected before 9.3.3 Fixed in 9.3.3 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:cerber:wp_cerber_security\,_anti-spam_\&_malware_scan::::::wordpress::*	before 9.3.3	Vulnerable	Cerber

cpe:2.3:a:cerber:wp_cerber_security\,_anti-spam_\&_malware_scan:*:*:*:*:*:wordpress:*:* Versions before 9.3.3 Vulnerable ·Cerber

Remediation

Fix · CNA WP Cerber Security, Anti-spam & Malware Scan (Unknown) Fixed in 9.3.3

Timeline

2026-10-02 Threatist record created from CVE-2022-4417
2026-10-03 Alias added: GHSA-cp43-7gjw-vj3h

References

Exploit 1

https://wpscan.com/vulnerability/a8c6b077-ff93-4c7b-970f-3be4d7971aa5

TI-2022-04309 WP Cerber Security <= 9.1 - Unauthenticated Stored Cross-Site Scripting CVSS 3.1HIGH 7.2
TI-2022-02719 WP Cerber Security <= 9.0 - User Enumeration Bypass CVSS 3.1MEDIUM 5.3
TI-2022-00353 WP Cerber Security, Anti-spam & Malware Scan < 8.9.6 - Unauthenticated Stored Cross-Site Scripting CVSS 3.1MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences