CVE-2025-12160

HIGH

Simple User Registration <= 6.6 - Unauthenticated Stored Cross-Site Scripting via wpr_admin_msg Parameter

Title source: llm

Description

The Simple User Registration plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'wpr_admin_msg' parameter in all versions up to, and including, 6.6 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

References (2)

Core 2

Core References

Product

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3396064%40wp-registration&new=3396064%40wp-registration&sfp_email=&sfph_mail=

Third Party Advisory

https://www.wordfence.com/threat-intel/vulnerabilities/id/9bb5e60d-f7c9-4b47-ba6f-0f2d1d060263?source=cve

Scores

CVSS v3 7.2

EPSS 0.0020

EPSS Percentile 9.7%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-79

Status published

Products (1)

nmedia/Simple User Registration < 6.6

Published Nov 21, 2025

Tracked Since Feb 18, 2026