Vigilant – 100% Free Security Suite: Firewall, 2FA, Login, Headers, Scanner…: Cross-site scripting

Vigilant – 100% Free Security Suite: Firewall, 2FA, Login, Headers, Scanner… is affected by cross-site scripting. The vulnerable path is reachable without authentication. Injected script can execute in the affected site's origin when the vulnerable output is viewed. The published affected range is <= 2.10.2.

CVE / CNA score 7.2 CVSS 3.1 · security@wordfence.com

NVD score Pending NVD has not published its own CVSS assessment.

Component: Vigilant – 100% Free Security Suite: Firewall, 2FA, Login, Headers, Scanner…
Plugin slug: vigilante
Affected: <= 2.10.2
Safe version: See mitigation notes
Published: Sep 11, 2026
Weakness: CWE-79 — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

This CVE was published Sep 11, 2026 and is one of 1 known issue for this plugin.

What to do

Update, patch or deactivate.

No fixed release is identified. Update Vigilant – 100% Free Security Suite: Firewall, 2FA, Login, Headers, Scanner… when a release after 2.10.2 becomes available; until then, disable and remove it when the site's risk warrants. The official upstream changelog lists version 2.11.4, which is newer than the published affected range. Its changelog does not clearly confirm this specific fix, so it is not counted as a known-safe release.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

The Vigilant – 100% Free Security Suite: Firewall, 2FA, Login, Headers, Scanner… plugin for WordPress is vulnerable to Stored Cross-Site Scripting via User-Agent Header in all versions up to, and including, 2.10.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The malicious payload is delivered passively by any unauthenticated visitor who triggers a failed login attempt with a crafted User-Agent header, requiring no further interaction from the attacker once stored.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

References

Primary and upstream sources

Data attribution: This product uses the NVD API but is not endorsed or certified by the NVD.

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