Authentication Bypass Vulnerability in Vulnity Security Plugin for WordPress
CVE-2026-75903

8.1HIGH

Key Information:

Vendor

WordPress

Vendor
CVE Published:
16 October 2026

What is CVE-2026-75903?

The Vulnity Security plugin for WordPress suffers from an authentication bypass vulnerability in all versions prior to 1.4.4. This issue arises due to inadequate protection of the delegated-login pairing credential file in Nginx environments. The server configuration generated by the plugin incorrectly points to a directory path, allowing unauthorized attackers to access sensitive login credentials. This exploit enables malicious actors to forge signed REST API requests and gain administrative access to the site, thereby compromising its security.

Affected Version(s)

Vulnity Security 0 <= 1.4.3

References

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Décio Brandão
.