CVE-2026-81754

Vigilant <= 2.10.2 - Unauthenticated Stored Cross-Site Scripting

Published Sep 11, 2026 CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Fernandot
Fernandot vigilant – 100% Free Security Suite: Firewall, 2fa, Login, Headers, Scanner…
Wordpress
Wordpress wordpress
Vendors & Products Fernandot
Fernandot vigilant – 100% Free Security Suite: Firewall, 2fa, Login, Headers, Scanner…
Wordpress
Wordpress wordpress
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Vigilant <= 2.10.2 - Unauthenticated Stored Cross-Site Scripting
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Wordfence
Published
Updated
Sep 11, 2026, 2:11 PM
Reserved
Aug 27, 2026, 12:18 PM
Status
Deferred
Published
Sep 11, 2026, 4:17 AM
Modified
Sep 11, 2026, 3:17 PM