What is CVE-2026-11766?

CVE-2026-11766 is a high-severity vulnerability in Ultimate Member, classified under CWE-79 CROSS-SITE SCRIPTING (XSS). CVSS score: 8.0/10. Published 2026-07-06.

How severe is CVE-2026-11766?

High severity. CVSS v3 base score is 8.0 out of 10.

Vulnerability in Ultimate Member

CVE-2026-11766

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 abov…

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

Affected products

Unknown Ultimate Member — versions 0

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-11766?: CVE-2026-11766 is a high-severity vulnerability in Ultimate Member, classified under CWE-79 CROSS-SITE SCRIPTING (XSS). CVSS score: 8.0/10. Published 2026-07-06.
How severe is CVE-2026-11766?: High severity. CVSS v3 base score is 8.0 out of 10.