RCE in Spacetime Ad Inserter – Manager & Adsense Ads
CVE-2026-102905
The The Ad Inserter – Ad Manager & AdSense Ads plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 2.8.19 This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes. Exploitation requires an administrator to have configured an ad block containing a dynamic tag such as {title}, {tag}, {category}, or {smart-tag} with display enabled on search pages, which is a normal and documented plugin configuration.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- www.wordfence.com/threat-intel/vulnerabilities/id/a36f813c-97c5-466d-92e0-7341c…
- plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.19/class.php
- plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.19/ad-inserter.php
- plugins.trac.wordpress.org/browser/ad-inserter/tags/2.8.19/ad-inserter.php
- plugins.trac.wordpress.org/changeset/3770281/ad-inserter/trunk/ad-inserter.php
Frequently asked questions
- What is CVE-2026-102905?
- CVE-2026-102905 is a medium-severity vulnerability in Spacetime Ad Inserter – Manager & Adsense Ads, classified under Code Injection. CVSS score: 6.5/10. Published 2026-10-30.
- How severe is CVE-2026-102905?
- Medium severity. CVSS v3 base score is 6.5 out of 10.