Vulnerability · Published Sep 27, 2026 · Assigned by WPScan

CVE-2026-81655Ad Inserter 2.8.12 - 2.8.18 - Subscriber+ RCE / Stored XSS via Global Custom Fields

High 7.5

In plain English

A high-severity code injection in Ad Inserter from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.3%top 83.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

The Ad Inserter WordPress plugin before 2.8.19 does not correctly restrict access to one of its settings pages, making it reachable by every logged in user under a configuration its own settings allow, and does not filter the content saved there, allowing users with a role as low as subscriber to store code which is then executed as PHP or served unescaped to site visitors.

Affected products (as reported)

Vendor	Product	Versions
Unknown	Ad Inserter	2.8.12 – before 2.8.19

Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://wpscan.com/vulnerability/b189ce9a-a930-41e6-bdd1-fdcc3bfb66be/ exploit, vdb-entry, technical-description