Read the docs
TI-2023-04806 Aliases CVE-2023-5228GHSA-cfhf-5qvq-2jgj

User Registration < 3.0.4.2 - Admin+ Stored XSS

Priority MEDIUM 55CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.

Summary

The User Registration WordPress plugin before 3.0.4.2 does not sanitize and escape some of its settings, which could allow high-privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00632 50th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix Fixed User Registration (Unknown): 3.0.4.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownUser Registrationbefore 3.0.4.23.0.4.2Patch availableCNA
  • User Registration VendorUnknown Affected before 3.0.4.2 Fixed in 3.0.4.2 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:wpeverest:user_registration:*:*:*:*:*:wordpress:*:*before 3.0.4.2Vulnerablewpeverest
  • cpe:2.3:a:wpeverest:user_registration:*:*:*:*:*:wordpress:*:* Versions before 3.0.4.2 Vulnerable ·wpeverest

Remediation

  • Fix · CNA User Registration (Unknown) Fixed in 3.0.4.2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-5228
  2. 2026-10-03 Alias added: GHSA-cfhf-5qvq-2jgj
  3. 2026-11-07 EPSS moved to the 50th–90th percentile

References

Exploit 1

  • TI-2022-03588 User Registration < 2.2.4.1 - Subscriber+ Arbitrary File Upload CVSS 3.1HIGH 7.5
  • TI-2023-03127 User Registration <= 3.0.2 - Authenticated (Subscriber+) Arbitrary File Upload CVSS 3.1CRITICAL 9.9
  • TI-2023-03128 User Registration <= 3.0.1 - Authenticated (Subscriber+) PHP Object Injection CVSS 3.1HIGH 8.8
  • TI-2023-13809 WordPress User Registration plugin <= 2.3.2.1 - Broken Access Control vulnerability CVSS 3.1MEDIUM 5.3
  • TI-2025-01300 Cross-site scripting in wpeverest User Registration & Membership – Free & Paid… CVSS 3.1MEDIUM 6.1
  • TI-2023-09774 WordPress User Registration Plugin <= 2.3.0 is vulnerable to Cross Site Scripting (XSS) CVSS 3.1MEDIUM 5.9
See all 7 →

Sources

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