WP User Manager <= 2.9.18 - Missing Authorization to Authenticated (Subscriber+) Stripe Account Hijack via Stripe Connect Callback

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-18345
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-22 08:16:38 UTC
Updated2026-09-22 19:04:55 UTC
DescriptionThe WP User Manager plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the Connect::complete() function in versions up to, and including, 2.9.18. The function is registered on the admin_init hook (which fires for every authenticated user that reaches /wp-admin/, including Subscribers) and performs no current_user_can() or nonce verification before fetching Stripe credentials from the external WPUM connect service and writing them (publishable key, secret key, gateway mode, and connected Stripe account ID) into the wpum_settings option via wpum_update_option()/update_option(). This makes it possible for authenticated attackers, with Subscriber-level access and above, to hijack the site's Stripe integration by completing their own Stripe Connect OAuth flow and then invoking the callback on the target site, causing all subsequent Stripe payments to be routed to the attacker's Stripe account.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

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

EPSS: 0.001960000 probability, percentile 0.095990000 (date 2026-09-23)

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

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
3.1CNADECLARED4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Wpusermanager WP User Manager User Profile Builder Membership affected 2.9.18 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/wp-user-manager/tags/2.9.18/includes/integrations/str... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/wp-user-manager/tags/2.9.18/includes/integrations/str... [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/ecae11ec-c952-4f5a-9e55-e2ac2... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/wp-user-manager/tags/2.9.18/includes/integrations/str... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset [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: Wordfence PRISM (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-07-29T22:30:58.000ZVendor Notified
CNA2026-09-21T18:59:14.000ZDisclosed

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