What is CVE-2026-11900?

CVE-2026-11900 is a medium-severity vulnerability in Spacetime Ad Inserter – Manager & Adsense Ads, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-07-03.

How severe is CVE-2026-11900?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Spacetime Ad Inserter – Manager & Adsense Ads

CVE-2026-11900

The Ad Inserter – Ad Manager & AdSense Ads plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to and including 2.8.16 via the 'data' attribute of the [adinserter] shortcode. This is due to the replace_ai_…

Vulnerability class: IDOR (Insecure Direct Object Reference)

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Spacetime Ad Inserter – Manager & Adsense Ads — versions 0

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

Frequently asked questions

What is CVE-2026-11900?: CVE-2026-11900 is a medium-severity vulnerability in Spacetime Ad Inserter – Manager & Adsense Ads, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-07-03.
How severe is CVE-2026-11900?: Medium severity. CVSS v3 base score is 4.3 out of 10.