High severity · published Jul 6, 2026
CVE-2026-11766
Ultimate Member < 2.12.0 - Subscriber+ Stored XSS via Custom Textarea Profile Fields
8.0
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UM
Ultimate Member ·
before 2.12.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-11766
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-11766
wpscan.com
https://wpscan.com/vulnerability/96adb2d3-af34-4455-97d4-90af58049e78/
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