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TI-2026-10537 Aliases CVE-2026-12251GHSA-x3gc-pq2r-3884

Ultimate Member < 2.12.1 - Unauthenticated Privilege Escalation via Role Selection Field

Priority LOW 37CWE-269Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Privilege escalation
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-269.

Summary

The Ultimate Member WordPress plugin before 2.12.1 does not filter administrator-level capabilities from the roles it makes selectable on its registration forms, and its post-registration safeguard against elevated accounts is disabled by default, allowing unauthenticated users to register with a site-defined role that carries administrator capabilities and gain administrative access, when such a role exists and a role-selection field is present on a published registration form.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00383 32nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Ultimate Member (Unknown): 2.12.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownUltimate Memberbefore 2.12.12.12.1Patch availableCNA
  • Ultimate Member VendorUnknown Affected before 2.12.1 Fixed in 2.12.1 Patch available CNA

Remediation

  • Fix · CNA Ultimate Member (Unknown) Fixed in 2.12.1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-12251
  2. 2026-10-03 Alias added: GHSA-x3gc-pq2r-3884

References

Exploit 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences