---
title: "Vulnity Security WordPress plugin - Authentication Bypass"
description: "Vulnity Security WordPress plugin <= 1.4.3 contains an authentication bypass caused by insufficient protection of delegated-login credential file on Nginx, letting unauthenticated attackers forge REST API requests and log in as admin."
url: https://panop.io/threat-heartbeat/CVE-2026-75903/
---

# CVE-2026-75903 Vulnity Security WordPress plugin - Authentication Bypass

Vulnity Security WordPress plugin <= 1.4.3 contains an authentication bypass caused by insufficient protection of delegated-login credential file on Nginx, letting unauthenticated attackers forge REST API requests and log in as admin.

CVSS base score 8.1 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-75903)

## Details

Type

Broken Authentication

Impact

Broken Authentication

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Published

16 October 2026

Updated

16 October 2026

Weakness

[CWE-287](https://cwe.mitre.org/data/definitions/287.html)

## Vendor fix

Update to the latest version beyond 1.4.3.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-75903](https://nvd.nist.gov/vuln/detail/CVE-2026-75903)
- [https://plugins.trac.wordpress.org/changeset/3719370/vulnity/trunk/includes/class-static-security.php](https://plugins.trac.wordpress.org/changeset/3719370/vulnity/trunk/includes/class-static-security.php)
- [https://plugins.trac.wordpress.org/changeset?reponame=&new=3719373%40vulnity%2Ftags%2F1.4.4&old=3717813%40vulnity%2Ftags%2F1.4.3](https://plugins.trac.wordpress.org/changeset?reponame=&new=3719373%40vulnity%2Ftags%2F1.4.4&old=3717813%40vulnity%2Ftags%2F1.4.3)
- [https://www.wordfence.com/threat-intel/vulnerabilities/id/5574a52f-cec8-4f79-a3a7-5c13272e5e17?source=cve](https://www.wordfence.com/threat-intel/vulnerabilities/id/5574a52f-cec8-4f79-a3a7-5c13272e5e17?source=cve)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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