CVE-2026-93428 json
Ultimate Member <= 2.13.1 - Missing Authorization to Unauthenticated Sensitive Profile Field Disclosure via Member Directory Field Privacy Bypass
published 2026-10-03 37 d ago modified 2026-10-06 34 d ago also EUVD-2026-91881
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 44%
- public exploits
- 0
- none known
Summary
The Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.13.1 This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to view privacy-restricted member profile field values — including fields explicitly configured as owner-only, members-only, or role-restricted — by querying the publicly accessible wp_ajax_nopriv_um_get_members endpoint. The nonce required by the endpoint ('um-frontend-nonce') is emitted to all unauthenticated visitors via wp_localize_script, meaning it provides no meaningful access control and any anonymous visitor can satisfy the endpoint's authentication requirements.
Patch / fix
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 36 d ago
Exploit prediction
0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected products
- ultimatemember Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin
Classification
- Weakness
-
- CWE-862 Missing Authorization
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/cde81421-e080-4530-87a5-6515f1c9800b?source=cve
- plugins.trac.wordpress.org /browser/ultimate-member/tags/2.13.1/includes/core/class-member-directory.php#L2795
- plugins.trac.wordpress.org /browser/ultimate-member/tags/2.13.1/includes/core/class-member-directory.php#L2839
- plugins.trac.wordpress.org /browser/ultimate-member/tags/2.13.1/includes/core/class-fields.php#L144
- plugins.trac.wordpress.org /browser/ultimate-member/tags/2.13.1/includes/core/um-actions-profile.php#L1319
- plugins.trac.wordpress.org /browser/ultimate-member/tags/2.13.1/includes/core/class-ajax-common.php#L61
- plugins.trac.wordpress.org /browser/ultimate-member/tags/2.13.1/includes/um-short-functions.php#L1579
- github.com /ultimatemember/ultimatemember/releases/tag/2.14.0
Sources
- CVE List CVE-2026-93428
- NVD CVE-2026-93428
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.