CVE-2026-84258CWE-79cross-site-scripting

CVE-2026-84258

High · published October 11, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
21.9
In the wild
Unconfirmed
What it is

The click5 CRM add-on to Ninja Forms WordPress plugin through 1.0.1 does not sanitise and escape content submitted through an unauthenticated endpoint before outputting it back in an admin page, leading to Stored XSS which could be used against high privilege users such as admin.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00303 · 21.9th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-10-11T11:17Z
References (1)
https://wpscan.com/vulnerability/3eae023f-a0fe-4313-9aee-18a8933eedb3/ · [email protected]
EPSS history
Timeline
  • 12 OCT 03:31Z
    EPSS moved — → 0%
    epss
  • 11 OCT 06:00Z
    click5 CRM add-on to Ninja Forms <= 1.0.1 - Unauthenticated Stored XSS via post_notifications
    cvelistv5
  • 11 OCT 06:00Z
    click5 CRM add-on to Ninja Forms <= 1.0.1 - Unauthenticated Stored XSS via post_notifications
    cvelistv5