Ultimate Member 2.6.7 - 2.12.1 - Unauthenticated Privilege Escalation via Role Field on Profile Forms
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 2.13.0 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.
Why it matters now
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | Ultimate Member | 2.6.7 to before 2.13.0 | 2.13.0 | Patch available | CNA |
- Ultimate Member VendorUnknown Affected 2.6.7 to before 2.13.0 Fixed in 2.13.0 Patch available CNA
Remediation
- Fix · CNA Ultimate Member (Unknown) Fixed in 2.13.0
Timeline
- 2026-10-02 Threatist record created from CVE-2026-19423
- 2026-10-03 Alias added: GHSA-g9rf-98hp-9vc3
References
Sources
- CVE-2026-19423 · CVE Program
- CVE-2026-19423 · NVD
- FIRST EPSS
- GHSA-g9rf-98hp-9vc3 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences