Description
Unauthenticated Broken Authentication in Headless Single Sign On <= 1.7.0 versions.
Published: 2026-09-17
Score: 9.8 Critical
EPSS: < 1% Very Low
KEV: No
Impact: Unauthenticated Account Takeover
Action: Immediate Patch
AI Analysis

Impact

The vulnerability lies in the authentication mechanism of the miniOrange Headless Single Sign On plugin for WordPress, affecting all released versions up to and including 1.7.0. The flaw allows an attacker to skip the normal authentication step and obtain privileged access without possessing valid credentials. This breach in authentication control is classified as CWE‑290, representing broken authentication.

Affected Systems

WordPress sites that have the miniOrange Headless Single Sign On plugin installed with a version of 1.7.0 or older are affected. The plugin is used to enable headless authentication for WordPress installations. Any installation that has not yet upgraded to the patched release remains vulnerable until remediation is applied.

Risk and Exploitability

The CVSS score of 9.8 signals critical severity. No EPSS data is available, and the vulnerability is not listed in the CISA KEV catalog, but the ability to bypass authentication without any preconditions makes it straightforward for remote attackers to exploit. Attackers can target the site over HTTP(S) and trigger the flaw via the plugin’s exposed endpoints, giving them potential access to administrative capabilities. Consequently, timely patching is strongly advised.

Generated by OpenCVE AI on September 17, 2026 at 22:29 UTC.

Remediation

Vendor Solution

Update the WordPress Headless Single Sign On Plugin to the latest available version (at least 1.7.1).

OpenCVE Recommended Actions

  • Upgrade the miniOrange Headless Single Sign On WordPress plugin to version 1.7.1 or later.
  • Disable or restrict any unused authentication methods exposed by the plugin to limit the attack surface.
  • Monitor authentication error logs for unusual patterns and enforce rate limiting on login attempts to mitigate brute force exploitation.

Generated by OpenCVE AI on September 17, 2026 at 22:29 UTC.

Tracking

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Advisories

No advisories yet.

History

Thu, 17 Sep 2026 22:15:00 +0000

Type Values Removed Values Added
First Time appeared Miniorange
Miniorange headless Single Sign On
Wordpress
Wordpress wordpress
Vendors & Products Miniorange
Miniorange headless Single Sign On
Wordpress
Wordpress wordpress

Thu, 17 Sep 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Thu, 17 Sep 2026 13:30:00 +0000

Type Values Removed Values Added
Description Unauthenticated Broken Authentication in Headless Single Sign On <= 1.7.0 versions.
Title WordPress Headless Single Sign On plugin <= 1.7.0 - Broken Authentication vulnerability
Weaknesses CWE-290
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Subscriptions

Miniorange Headless Single Sign On
Wordpress Wordpress
cve-icon MITRE

Status: PUBLISHED

Assigner: Patchstack

Published:

Updated: 2026-09-17T19:22:16.573Z

Reserved: 2026-07-13T06:15:10.221Z

Link: CVE-2026-62108

cve-icon Vulnrichment

Updated: 2026-09-17T17:15:40.322Z

cve-icon NVD

Status : Deferred

Published: 2026-09-17T14:17:15.263

Modified: 2026-09-17T21:12:30.593

Link: CVE-2026-62108

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-17T22:30:17Z

Weaknesses
  • CWE-290

    Authentication Bypass by Spoofing