What is CVE-2026-111966?

CVE-2026-111966 is a medium-severity vulnerability in User Profile Builder, classified under Cross-site Scripting. CVSS score: 6.8/10. Published 2026-10-23.

How severe is CVE-2026-111966?

Medium severity. CVSS v3 base score is 6.8 out of 10.

XSS in User Profile Builder

CVE-2026-111966

The User Profile Builder WordPress plugin before 4.0.5 does not sanitise and escape one of its shortcode attributes before outputting it back in a redirect message, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attacks against higher-privileged users who submit the affected form.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-10-23 · last modified 2026-10-23.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

User Profile Builder

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

wpscan.com/vulnerability/26983c21-09d2-491f-b62f-1270b335dfcd/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-111966?: CVE-2026-111966 is a medium-severity vulnerability in User Profile Builder, classified under Cross-site Scripting. CVSS score: 6.8/10. Published 2026-10-23.
How severe is CVE-2026-111966?: Medium severity. CVSS v3 base score is 6.8 out of 10.