CVE-2025-12033

MEDIUM

Simple Banner < 3.0.10 - Authenticated Stored Cross-Site Scripting via pro_version_activation_code Parameter

Title source: llm

Description

The Simple Banner – Easily add multiple Banners/Bars/Notifications/Announcements to the top or bottom of your website plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'pro_version_activation_code' parameter in all versions up to, and including, 3.0.10 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

References (2)

Core 2

Core References

Product

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3363618%40simple-banner&new=3363618%40simple-banner&sfp_email=&sfph_mail=

Third Party Advisory

https://www.wordfence.com/threat-intel/vulnerabilities/id/9b620481-8f45-4616-9b22-2dd14733325c?source=cve

Scores

CVSS v3 4.4

EPSS 0.0017

EPSS Percentile 7.0%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-79

Status published

Products (1)

rpetersen29/Simple Banner – Easily add multiple Banners/Bars/Notifications/Announcements to the top or bottom of your website < 3.0.10

Published Oct 22, 2025

Tracked Since Feb 18, 2026