CVE-2026-11983

MEDIUM 5.3

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

CVSS Score

5.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-862
Vendor	spacetime
Product	ad inserter – ad manager & adsense ads
Published	Aug 6, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

spacetime / Ad Inserter – Ad Manager & AdSense Ads

0 ≤ 2.8.16

References

NVD ↗ CVE.org ↗ EPSS Data ↗

wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/b5715acd-62e6-4cd8-8fe8-4b1412f287c9?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset/3583409 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset/3567905

Credits

AlexHenry