FormLift for Infusionsoft Web Forms <= 7.5.21 - Missing Authorization to Unauthenticated Infusionsoft Connection Hijack via OAuth Connection Flow

MITRE NVD CVE.ORG Print: PDF PDF

Summary

CVECVE-2026-4281
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-26 05:16:40 UTC
Updated2026-03-30 13:26:50 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS: 0.002490000 probability, percentile 0.480840000 (date 2026-04-01)

Problem Types: CWE-862 | CWE-862 CWE-862 Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
3.1CNADECLARED5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Trainingbusinesspros FormLift For Infusionsoft Web Forms affected * 7.5.21 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/formlift/trunk/modules/api/infusionsoft-manager.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/formlift/tags/7.5.21/modules/api/infusionsoft-manager... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/formlift/tags/7.5.21/modules/api/infusionsoft-manager... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/formlift/trunk/modules/api/infusionsoft-manager.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/formlift/trunk/modules/api/infusionsoft-manager.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/a65cc674-a0ea-46b9-b609-b184e... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/formlift/tags/7.5.21/modules/api/infusionsoft-manager... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/formlift/tags/7.5.21/modules/api/infusionsoft-manager... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/formlift/trunk/modules/api/infusionsoft-manager.php [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Nabil Irawan (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-03-16T19:16:26.000ZVendor Notified
CNA2026-03-25T14:51:55.000ZDisclosed
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