CVE-2026-8489CWE-79

Ultimate Member <= 2.11.4 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Non-HTML Custom Textarea Profile Field

Medium · published July 3, 2026

CVSS v3.1
6.4
EPSS
0%
Percentile
35.1
In the wild
Unconfirmed
What it is

The Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'about_me' parameter in all versions up to, and including, 2.11.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The record
Technical detail
CVSS v3.1
6.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00419 · 35.1th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-07-03T04:30Z
EPSS history
Timeline
  • 03 JUL 04:30Z
    Ultimate Member <= 2.11.4 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Non-HTML Custom Textarea Profile Field
    cvelistv5