Missing authorization in WP User Manager – User Profile Builder & Membership
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
The 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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| WP User Manager | WP User Manager – User Profile Builder & Membership | up to 2.9.18 | — | No fix listed | CNA |
- WP User Manager – User Profile Builder & Membership VendorWP User Manager Affected up to 2.9.18 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-18345
- 2026-10-03 Alias added: GHSA-9596-j6mw-33fx
References
Other 5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/ecae11ec-c952-4f5a-9e55-e2ac2fa05100?source=cve
- https://plugins.trac.wordpress.org/browser/wp-user-manager/tags/2.9.18/includes/integrations/stripe/Connect.php#L203
- https://plugins.trac.wordpress.org/browser/wp-user-manager/tags/2.9.18/includes/integrations/stripe/Connect.php#L21
- https://plugins.trac.wordpress.org/browser/wp-user-manager/tags/2.9.18/includes/integrations/stripe/Connect.php#L177
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3701837%40wp-user-manager&new=3701837%40wp-user-manager
More WP User Manager vulnerabilities
- TI-2025-37611 WordPress WP User Manager plugin <= 2.9.12 - PHP Object Injection vulnerability CVSS 3.1CRITICAL 9.8
- TI-2026-08157 WP User Manager <= 2.9.17 - Unauthenticated Path Traversal to Local File Inclusion via 'tab' Query Parameter CVSS 3.1HIGH 7.5
- TI-2026-36675 WordPress WP User Manager plugin <= 2.9.16 - Arbitrary File Deletion vulnerability CVSS 3.1CRITICAL 9.9
- TI-2021-06937 WP User Manager < 2.6.3 - Arbitrary User Password Reset to Account Compromise CVSS 3.1HIGH 7.5
- TI-2026-67832 Improper access control in WP User Manager WordPress plugin CVSS 3.1MEDIUM 6.5
- TI-2025-12183 WP User Manager <= 2.9.12 - Authenticated (Subscriber+) Arbitrary File Deletion via 'current_user_avatar' Parameter CVSS 3.1MEDIUM 6.8
Sources
- CVE-2026-18345 · CVE Program
- CVE-2026-18345 · NVD
- FIRST EPSS
- GHSA-9596-j6mw-33fx · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences