CM Ad Changer – A simple tool to control and optimize your site's banners: Cross-site request forgery

CM Ad Changer – A simple tool to control and optimize your site's banners is affected by cross-site request forgery. The vulnerable path is reachable without authentication. Exploitation relies on a signed-in privileged user submitting an attacker-controlled request. The published affected range is <= 2.0.7.

CVE / CNA score 4.3 CVSS 3.1 · security@wordfence.com

NVD score Pending NVD has not published its own CVSS assessment.

Component: CM Ad Changer – A simple tool to control and optimize your site's banners
Plugin slug: cm-ad-changer
Affected: <= 2.0.7
Safe version: See mitigation notes
Published: May 27, 2026
Weakness: CWE-352 — Cross-Site Request Forgery (CSRF)

This CVE was published May 27, 2026 and is one of 2 known issues for this plugin.

What to do

Update, patch or deactivate.

No fixed release is identified. Update CM Ad Changer – A simple tool to control and optimize your site's banners when a release after 2.0.7 becomes available; until then, disable and remove it when the site's risk warrants. The official upstream changelog lists version 2.0.8, which is newer than the published affected range. Its changelog does not clearly confirm this specific fix, so it is not counted as a known-safe release.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

The CM Ad Changer – A simple tool to control and optimize your site's banners plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.0.7. This is due to missing or incorrect nonce validation on the cmac_campaigns_action function. This makes it possible for unauthenticated attackers to permanently delete arbitrary advertising campaigns, including their associated banner records and uploaded files via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

References

Primary and upstream sources

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