CVE-2026-11983 Ad Inserter <= 2.8.16 - Missing Authorization to Block Visibility Bypass via ai_ajax
Unauthenticated attackers can bypass visibility restrictions to view administrator-only ad block contents in the Ad Inserter WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-11983?
CVE-2026-11983 is a medium-severity missing authorization vulnerability in spacetime Ad Inserter – Ad Manager & AdSense Ads, published on 6 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Ad Inserter – Ad Manager & AdSense Ads plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.8.16 due to a missing capability check in the `ai_ajax` function. This makes it possible for unauthenticated attackers to view the contents of ad blocks that an administrator has restricted to administrator-only visibility.
Weakness: CWE-862
Which versions are affected by CVE-2026-11983?
How do I fix CVE-2026-11983?
No fix has been published for CVE-2026-11983 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-11983 being exploited?
There is no known exploitation of CVE-2026-11983 in the wild and no public exploit code.
Sources
Also known as GHSA-74q3-73gr-qrvx.