CVE-2025-12033

Simple Banner <= 3.0.10 - Authenticated (Admin+) Stored Cross-Site Scripting

MEDIUM
4.4
CVSS Score
Published: October 22, 2025 at 06:40 AM UTC
Updated: October 8, 2026 at 11:10 AM UTC
1 product affected across 1 vendorSimple Banner

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

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Severity
MEDIUM4.4
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

90%
0 ≤ v ≤ 3.0.100

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.4MEDIUMWordfence
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-79

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