Vulnerability · Published Aug 6, 2026 · Assigned by Wordfence

CVE-2026-11983Ad Inserter <= 2.8.16 - Missing Authorization to Block Visibility Bypass via ai_ajax

Medium 5.3

In plain English

A medium-severity missing authorization in Ad Inserter – Ad Manager & AdSense Ads from spacetime. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.4%top 62.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
spacetime	Ad Inserter – Ad Manager & AdSense Ads	0 – through 2.8.16

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

In plain English

Official description

Affected products (as reported)

References