What is CVE-2026-86799?

CVE-2026-86799 is a high-severity vulnerability in Forms, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2026-10-14.

How severe is CVE-2026-86799?

High severity. CVSS v3 base score is 8.8 out of 10.

XSS in Forms

CVE-2026-86799

The Forms WordPress plugin before 3.0.2 does not sanitise submitted form values on storage, nor escape them before outputting them on the form submissions screen in the administration dashboard, allowing unauthenticated users to inject arbitrary web scripts that will execute in the browser of any administrator viewing the submissions.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-10-14 · last modified 2026-10-14.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/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

Forms

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

wpscan.com/vulnerability/75bdda94-06b3-4747-bcd2-903167ac1c00/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-86799?: CVE-2026-86799 is a high-severity vulnerability in Forms, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2026-10-14.
How severe is CVE-2026-86799?: High severity. CVSS v3 base score is 8.8 out of 10.