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CVE-2026-4281

MEDIUM 5.3 CVSS 3.1
Published
March 26, 2026
Last modified
June 17, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-862
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Description

The FormLift for Infusionsoft Web Forms plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 7.5.21. This is due to missing capability checks on the connect() and listen_for_tokens() methods of the FormLift_Infusionsoft_Manager class, both of which are hooked to 'plugins_loaded' and execute on every page load. The connect() function generates an OAuth connection password and leaks it in the redirect Location header without verifying the requesting user is authenticated or authorized. The listen_for_tokens() function only validates the temporary password but performs no user authentication before calling update_option() to save attacker-controlled OAuth tokens and app domain. This makes it possible for unauthenticated attackers to hijack the site's Infusionsoft connection by first triggering the OAuth flow to obtain the temporary password, then using that password to set arbitrary OAuth tokens and app domain via update_option(), effectively redirecting the plugin's API communication to an attacker-controlled server.

Affected WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • trainingbusinesspros FormLift for Infusionsoft Web Forms — Up to and including 7.5.21

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/formlift/tags/7.5.21/modules/api/infusionsoft-manager.php#L21
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/formlift/tags/7.5.21/modules/api/infusionsoft-manager.php#L46
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/formlift/tags/7.5.21/modules/api/infusionsoft-manager.php#L62
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/formlift/tags/7.5.21/modules/api/infusionsoft-manager.php#L64
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/formlift/trunk/modules/api/infusionsoft-manager.php#L21
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/formlift/trunk/modules/api/infusionsoft-manager.php#L46
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/formlift/trunk/modules/api/infusionsoft-manager.php#L62
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/formlift/trunk/modules/api/infusionsoft-manager.php#L64
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3490212%40formlift&new=3490212%40formlift&sfp_email=&sfph_mail=
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/a65cc674-a0ea-46b9-b609-b184e1f7ca8e?source=cve
  • nvd.nist.gov Official NVD record