Ultimate Member < 2.12.0 - Subscriber+ Stored XSS via Custom Textarea Profile Fields
Priority LOW 37Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
The Ultimate Member WordPress plugin before 2.12.0 does not properly sanitise and escape the value of custom textarea profile fields before outputting it on user profiles, allowing authenticated users with Subscriber-level access and above to store JavaScript that executes when any user, including an administrator, views the affected profile.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00413 35th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Ultimate Member (Unknown): 2.12.0
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 | before 2.12.0 | 2.12.0 | Patch available | CNA |
- Ultimate Member VendorUnknown Affected before 2.12.0 Fixed in 2.12.0 Patch available CNA
Remediation
- Fix · CNA Ultimate Member (Unknown) Fixed in 2.12.0
Timeline
- 2026-10-02 Threatist record created from CVE-2026-11766
- 2026-10-03 Alias added: GHSA-qhrq-pqx6-6f9v
References
Sources
- CVE-2026-11766 · CVE Program
- CVE-2026-11766 · NVD
- FIRST EPSS
- GHSA-qhrq-pqx6-6f9v · 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