Quick answers
- Is CVE-2026-84258 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-84258 being exploited in the wild.
- How severe is CVE-2026-84258?
- High severity, with a CVSS score of 8.8, published 11 October 2026.
- Which products and versions are affected?
- click5 CRM add-on to Ninja Forms through 1.0.1.
- Is there a fix for CVE-2026-84258?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-84258 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-84258?
- Check whether you run click5 CRM add-on to Ninja Forms at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An unauthenticated endpoint in the plugin does not sanitize or escape submitted content before storing and reflecting it on an admin page, enabling stored XSS (CWE-79). The vulnerability is triggered via the post_notifications parameter and persists in the database, executing in the browsers of high-privilege users like administrators. No fix is currently available.
Affected products
- click5 click5 CRM add-on to Ninja Forms through 1.0.1
Timeline
- 2026-10-09: disclosed
- 2026-10-11: advisory