CVE-2026-11766

HIGHCVSS 8/10EPSS 0.17%

Last modified

CVE-2026-11766 is a high-severity vulnerability rated 8/10 on the CVSS scale. 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.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

EPSS Probability
0.17%

6.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
UnknownUltimate Member< 2.12.0

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is 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 above to store JavaScript that executes when any user, including an administrator, views the affected profile.
How severe is CVE-2026-11766?
CVE-2026-11766 has a CVSS score of 8/10 (HIGH severity). The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2026-11766?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

Related CVEs from 2026

Are you affected by CVE-2026-11766?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST