Medium severity · published Aug 6, 2026
CVE-2026-11983
Ad Inserter <= 2.8.16 - Missing Authorization to Block Visibility Bypass via ai_ajax
5.3
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 37% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AI
Ad Inserter – Ad Manager & AdSense Ads · spacetime
through 2.8.16 · source: vendor
Affected product
AI
Ad Inserter – Ad Manager & AdSense Ads
spacetime
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-11983
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-11983
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3567905
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3583409
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/b5715acd-62e6-4cd8-8fe8-4b1412f287c9?source=cve
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