Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.

CVE-2026-81754 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:6.1 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CNA: [email protected]CVSS-B:7.2 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://plugins.trac.wordpress.org/browser/vigilante/tags/2.9.5/assets/js/admin.js#L1996	[email protected]	Source CodeVendor
https://plugins.trac.wordpress.org/browser/vigilante/tags/2.9.5/assets/js/admin.js#L2778	[email protected]	Source CodeVendor
https://plugins.trac.wordpress.org/browser/vigilante/tags/2.9.5/includes/class-database.php#L448	[email protected]	Source CodeVendor
https://plugins.trac.wordpress.org/browser/vigilante/tags/2.9.5/includes/class-database.php#L639	[email protected]	Source CodeVendor
https://plugins.trac.wordpress.org/browser/vigilante/tags/2.9.5/includes/class-login-security.php#L899	[email protected]	Source CodeVendor
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3669625%40vigilante%2Ftrunk%2Fassets%2Fjs%2Fadmin.js&old=3667821%40vigilante%2Ftrunk%2Fassets%2Fjs%2Fadmin.js&sfp_email=&sfph_mail=	[email protected]	Source CodeVendor
https://www.wordfence.com/threat-intel/vulnerabilities/id/c483cdc5-56e4-4ee7-a782-0505816728ab?source=cve	[email protected]	AdvisoryRemedy

see all 7 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	[email protected]

Affected Products

Product	Versions
Vigilant	<= 2.10.2 (semver)
CPE No CPEs found in CPE dictionary for this product. Remediation No remediation found in references.

Change History

2 change records found show changes

Date	Action	Recorded By
Sep 11, 2026	CVE Modified	CISA-ADP
Sep 11, 2026	New CVE Received	[email protected]