Description
The Advanced Form Integration — Connect Forms to 200+ Apps plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.6.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to overwrite the site's stored MailUp OAuth tokens in the adfoin_mailup_keys option with attacker-controlled tokens, hijacking future form-submission data to a MailUp account they control or nulling the tokens to break the integration entirely. This is exploitable by any authenticated user who can reach /wp-admin/profile.php, as admin_init fires for all logged-in users visiting any wp-admin page.
References6
- plugins.trac.wordpress.org/browser/advanced-form-integration/ta…
- plugins.trac.wordpress.org/browser/advanced-form-integration/ta…
- plugins.trac.wordpress.org/browser/advanced-form-integration/ta…
- plugins.trac.wordpress.org/browser/advanced-form-integration/ta…
- plugins.trac.wordpress.org/changeset?reponame=&old=3621411%40ad…
- www.wordfence.com/threat-intel/vulnerabilities/id/af913bb1-eff6…
Metrics
- CVSS 3.1
-
4.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - EPSS — exploit probability
- 0% percentile: 33 · as of 13 November 2026
- CWE
- CWE-862
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.