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Vulnerability record · CVE-2026-19423 · published 28 August 2026

CVE-2026-19423: Improper privilege management vulnerability

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.

8.1 CVSS 3.1 High EPSS 0.23% · top 88.0% CWE-269 · Improper privilege management Deferred
8.1CVSS 3.1 base score
0.23%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
28 Aug 2026Last modified by NVD

Description

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

References

LinkTags
https://wpscan.com/vulnerability/3cdc8700-165a-4787-a3d0-b0914865b07b/

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Source: NIST National Vulnerability Database (record CVE-2026-19423), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.