CVE-2026-19423highCWE-269

CVE-2026-19423: high-severity vulnerability in Ultimate Member

Ultimate Member 2.6.7 - 2.12.1 - Unauthenticated Privilege Escalation via Role Field on Profile Forms

Published

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41Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 8.1epss 0.4%
The Ultimate Member WordPress plugin before 2.13.0 does not validate a submitted role selection when it cannot resolve the set of roles a profile form permits, and screens the value against the site's registered role names rather than against the form's own allow-list, allowing unauthenticated users who register through the Ultimate Member WordPress plugin before 2.13.0's own form to grant themselves arbitrary capabilities and reach administrator-equivalent access.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Unknown · Ultimate Member
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — Ultimate Member

In the same product, most dangerous first.

CVE-2023-3460—Ultimate Member < 2.6.7 - Unauthenticated Privilege EscalationEPSS 72.3%CVE-2026-85680HIGHUltimate Member < 2.13.1 - Unauthenticated Stored XSS via Profile Page TitleEPSS 0.5%CVE-2026-11766HIGHUltimate Member < 2.12.0 - Subscriber+ Stored XSS via Custom Textarea Profile FieldsEPSS 0.4%CVE-2026-12251HIGHUltimate Member < 2.12.1 - Unauthenticated Privilege Escalation via Role Selection FieldEPSS 0.4%CVE-2026-19251MEDIUMUltimate Member < 2.13.0 - Unauthenticated Unapproved Comment Disclosure via Profile ActivityEPSS 0.3%