CVE-2026-11766
Stored XSS in Ultimate Member plugin via profile fields.
Is CVE-2026-11766 being exploited?
Not confirmed. CVE-2026-11766 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.41% probability of exploitation in the next 30 days.
How severe is CVE-2026-11766?
CVE-2026-11766 is rated High with a CVSS score of 8.0. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-11766?
Yes. A fix has been recorded for CVE-2026-11766. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-11766 affect?
CVE-2026-11766 affects Ultimate Member WordPress plugin (pre-2.12.0). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-11766?
Upgrade to v2.12.0 or later
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated users can inject JS into profile fields; executes when profiles are viewed by any user, including admins.
Patch when possible
- affected< 2.12.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.