CVE-2026-18345 json
WP User Manager <= 2.9.18 - Missing Authorization to Authenticated (Subscriber+) Stripe Account Hijack via Stripe Connect Callback
published 2026-09-22 48 d ago modified 2026-09-22 47 d ago also EUVD-2026-84307
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 27%
- public exploits
- 0
- none known
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 47 d ago
Exploit prediction
0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
Affected products
- wpusermanager WP User Manager – User Profile Builder & Membership
Classification
- Weakness
-
- CWE-862 Missing Authorization
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/ecae11ec-c952-4f5a-9e55-e2ac2fa05100?source=cve
- plugins.trac.wordpress.org /browser/wp-user-manager/tags/2.9.18/includes/integrations/stripe/Connect.php#L203
- plugins.trac.wordpress.org /browser/wp-user-manager/tags/2.9.18/includes/integrations/stripe/Connect.php#L21
- plugins.trac.wordpress.org /browser/wp-user-manager/tags/2.9.18/includes/integrations/stripe/Connect.php#L177
- plugins.trac.wordpress.org /changeset?reponame=&old=3701837%40wp-user-manager&new=3701837%40wp-user-manager
Sources
- CVE List CVE-2026-18345
- NVD CVE-2026-18345
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.