CVE-2026-81655 Ad Inserter WordPress Plugin - Stored XSS & Remote Code Execution

Ad Inserter WordPress plugin < 2.8.19 contains a stored XSS and remote code execution caused by insufficient access control and lack of content filtering on a settings page, letting logged-in users with subscriber role execute PHP or serve unescaped code, exploit requires specific plugin configuration allowing access.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.23% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Stored XSS
Impact
Remote Code Execution, Stored XSS
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
27 September 2026
Updated
15 October 2026
Weakness
CWE-94

Vendor fix

Upgrade to version 2.8.19 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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