Plugin Name	OAuth Single Sign On – SSO (OAuth Client)
Type of Vulnerability	Access control vulnerability
CVE Number	CVE-2025-10753
Urgency	Low
CVE Publish Date	2026-02-05
Source URL	CVE-2025-10753

Urgent: Broken Access Control in miniOrange ‘OAuth Single Sign On – SSO (OAuth Client)’ Plugin (<= 6.26.14) — Immediate Actions for WordPress Site Owners

Date: 2026-02-06
Author: Managed-WP Security Team
Categories: WordPress Security, Vulnerabilities, WAF
Tags: miniOrange, OAuth SSO, CVE-2025-10753, broken access control, WAF, Managed-WP

A critical broken access control vulnerability in the miniOrange OAuth Single Sign On – SSO (OAuth Client) plugin versions ≤ 6.26.14 could allow unauthorized actors to execute privileged plugin functions. This advisory details how to identify your risk exposure, apply immediate mitigations, and strengthen your security posture — including how Managed-WP delivers rapid protection for your WordPress environment.

Notice: This advisory is issued by the Managed-WP security team. It covers CVE-2025-10753, a broken access control vulnerability recently disclosed in the miniOrange “OAuth Single Sign On – SSO (OAuth Client)” WordPress plugin affecting versions ≤ 6.26.14 and resolved in 6.26.15. If your site uses this plugin, follow the guidance below without delay.

Table of Contents

• Issue Overview
• Understanding Broken Access Control
• Affected Plugin Versions & Severity
• Potential Exploit Scenarios
• Immediate Protective Measures (Quick Checklist)
• Comprehensive Mitigation & Remediation Process
• Detecting Signs of Exploitation
• Securing Against Similar Vulnerabilities
• How Managed-WP Protects Your Site (Managed WAF & Virtual Patching)
• Get Started with Our Free Plan Today
• Appendix: Commands and Further References

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Issue Overview

The vulnerability, disclosed by security researcher Jonas Benjamin Friedli, arises from missing authorization checks in the miniOrange OAuth Single Sign On – SSO (OAuth Client) plugin versions up to 6.26.14 (CVE-2025-10753). The vendor patched the issue in version 6.26.15.

This flaw permits unauthenticated users to invoke privileged plugin operations due to absent access restrictions. As reported, the CVSS score is 5.3, reflecting a medium risk primarily impacting plugin configuration integrity rather than full site control. However, risk levels may vary based on your plugin use and OAuth integrations.

This briefing provides clear, actionable steps to evaluate and mitigate the vulnerability promptly, while showing how Managed-WP’s Web Application Firewall (WAF) can offer immediate, effective protection.

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Understanding Broken Access Control

Broken access control happens when a plugin or software fails to properly enforce which users can execute specific actions or access resources. Key issues noted in WordPress plugins often include:

• Missing current_user_can() capability checks before privileged actions.
• Absence of nonce validation on critical state-changing requests.
• Allowing actions without any authentication (unauthenticated access).
• Relying solely on obscurity (unguessable URLs), rather than robust access controls.

The consequence: an attacker, even without login credentials, might trigger administrative or sensitive actions, potentially disrupting plugin behavior, leaking information, or escalating attacks via configuration tampering.

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Affected Plugin Versions & Severity

• Plugin Name: OAuth Single Sign On – SSO (OAuth Client)
• Plugin Slug: miniorange-login-with-eve-online-google-facebook
• Affected Versions: Versions ≤ 6.26.14
• Patched Version: 6.26.15
• CVE Identifier: CVE-2025-10753
• Discovered By: Jonas Benjamin Friedli
• Vulnerability Description: Broken Access Control (OWASP A1)
• CVSS Base Score: 5.3 (Medium)

Why Medium? While unauthenticated access is possible, the impact is confined largely to the plugin’s scope. However, if your OAuth setup involves complex account linking or automated provisioning, the effective risk to your site’s users and integrity may be greater.

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Potential Exploit Scenarios

Consider these plausible abuse methods attackers might attempt via this vulnerability:

• Manipulating OAuth connector settings, such as toggling integration states or altering callback URLs, disrupting legitimate authentication flows or redirecting users maliciously.
• Triggering login flow changes that could associate attacker-controlled OAuth identities with existing user accounts if safeguards are absent.
• Forcing the plugin to issue or store OAuth tokens and session data improperly, risking leakage or unauthorized access.
• Modifying or creating records in plugin-specific database tables, compromising configurations and enabling potential account compromises downstream.

Impact varies based on usage: sites implementing minimal SSO features incur less risk than those employing extensive automated user role mapping or provisioning.

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Immediate Protective Measures (Quick Checklist)

1. Verify plugin version: Confirm the installed plugin version. If it is ≤ 6.26.14, treat it as vulnerable.
2. Update immediately: Upgrade the plugin to version 6.26.15 or later via WordPress admin or WP-CLI if feasible.
3. Temporary mitigations if update is not possible:
   • Deactivate the plugin until a patch can be applied, or
   • Apply managed WAF virtual patching rules to block access to vulnerable plugin endpoints.
4. Review logs: Examine recent access logs for suspicious requests targeting plugin endpoints.
5. Rotate credentials: Reset administrator passwords and any OAuth client secrets configured in the plugin.
6. Enable Multi-Factor Authentication (MFA): Enforce MFA on all administrative accounts.
7. Back up your site: Create current backups of files and databases before making changes.

Utilizing Managed-WP’s security services ensures critical exploit attempts are blocked while you prepare to patch, minimizing exposure.

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Comprehensive Mitigation & Remediation Process

Step 1 — Confirm Plugin Presence & Version

• Check WordPress Admin Dashboard → Plugins → Installed Plugins.
• Or use WP-CLI: wp plugin list --status=active --format=table
• If the plugin is not installed, no specific action is needed for this vulnerability.

Step 2 — Update Plugin (Preferred)

• Update to 6.26.15 or newer via admin updates or WP-CLI:

  wp plugin update miniorange-login-with-eve-online-google-facebook

• Confirm the updated version after installation.

Step 3 — If Update Not Immediately Possible:

Option A — Temporarily Deactivate Plugin:

• Pause SSO functionality to eliminate vulnerability exposure.
• Deactivate through WordPress admin or with WP-CLI:

  wp plugin deactivate miniorange-login-with-eve-online-google-facebook

Option B — Apply Managed-WAF Virtual Patching:

• Block unauthorized or unauthenticated HTTP calls to plugin admin/AJAX endpoints.
• Enforce nonce validation, origin checks, and IP rate limiting for plugin actions.
• Mitigate exploit attempts through signature-based rules tuned to this vulnerability.

Step 4 — Audit Plugin Configuration & Secrets

• Rotate OAuth client IDs and secrets.
• Verify all callback URLs point to legitimate domains you control.
• Disable unneeded features such as auto-provisioning or role mapping temporarily.

Step 5 — Monitor Logs

• Analyze access and error logs for unusual POST requests or unauthorized modifications.
• Look for spikes in traffic directly interacting with plugin endpoints.
• Review user account changes potentially tied to SSO functions.

Step 6 — Post-Remediation Testing

• Test SSO functionality thoroughly after patching.
• Verify WAF rules block malicious requests but allow legitimate users.
• Continue monitoring for suspicious activity for at least 30 days post-update.

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Detecting Signs of Exploitation

Indicators your site may have been targeted or compromised via this flaw include:

• Unexpected changes in OAuth plugin settings (callback URLs, client IDs, enabled connectors).
• Creation of new admin or linked user accounts without your initiation.
• Unexplained authentication failures or anomalies in login attempts relating to OAuth routes.
• Server logs showing unauthenticated POST requests to the plugin’s AJAX or admin endpoints.
• Database modifications in plugin-related tables inconsistent with normal operation.
• Error logs containing traces of plugin-related functions or unexpected failures.

If exploitation signs are detected:

• Put your site into maintenance mode immediately if possible.
• Securely preserve logs and file copies for forensic review.
• Restore from trusted backups after full incident analysis.
• Coordinate with your security provider for investigation and remediation consultation.

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Securing Against Similar Vulnerabilities

WordPress plugins provide functionality but can introduce risk. Reduce exposure with these best practices:

1. Keep WordPress Core, Themese & Plugins Updated
   • Use staging/testing environments to validate updates before production deployment.
2. Minimize Attack Surface
   • Remove unused plugins/themes and choose reputable sources.
3. Principle of Least Privilege
   • Limit admin accounts, use roles appropriate for daily tasks, harden file/permission configs.
4. Enforce Strict Access Controls
   • Strong passwords, mandatory MFA, restrict wp-admin access by IP if feasible.
5. Leverage a Web Application Firewall (WAF)
   • Block known exploit patterns, virtual patch vulnerabilities, and reduce time-to-patch risks.
6. Harden Authentication Plugins
   • Verify stringent nonce and capability checks, sanitize inputs, restrict redirects to authorized domains.
   • Prefer manual approval for auto-provisioning features, if used.
7. Continuous Monitoring and Alerting
   • File change monitoring, login anomaly detection, and configuration change alerts.
8. Backup & Recovery
   • Maintain frequent, offsite backup routines tested via restores.

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How Managed-WP Protects Your Site (Managed WAF & Virtual Patching)

Managed-WP delivers security solutions tailored to WordPress site owners requiring swift, reliable protection against plugin vulnerabilities. Our approach includes:

• Emergency WAF Rule Deployment: Upon vulnerability disclosure, our expert team crafts tailored signatures targeting vulnerable plugin endpoints and behaviors, rapidly deploying managed firewall rules.
• Virtual Patching: We virtually patch vulnerabilities at the WAF layer, shrinking exposure windows and safeguarding sites unable to update immediately.
• Request Validation: Our WAF enforces strict checks for authentication, nonce presence, and HTTP method correctness on plugin-specific actions.
• Continuous Monitoring & Alerts: We monitor traffic for exploit patterns, notify you of blocked threats, and provide actionable incident intelligence.
• Minimal False Positives: Our rules are finely tuned to avoid disrupting legitimate user activity. Assistance is available to whitelist trusted sources as needed.
• Incident Response Guidance: In event of suspicious activity, Managed-WP consultants assist with detection, containment, log analysis, and remediation planning.

Virtual patching is crucial because:

• Not all WordPress site operators can apply patches instantly due to integrations, customizations, or hosting constraints. Managed-WP’s virtual patching closes this critical window.

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Get Started with Our Free Plan Today

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Don’t wait to secure your site. Our Basic plan offers essential protection while you prepare updates:

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For multiple sites or enhanced control, upgrade to Standard or Pro plans featuring automatic malware removal, IP management, monthly security reporting, auto virtual patching, and priority support.

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Appendix: Commands and Further References

Check plugin version via WP-CLI:

• wp plugin list --format=table
• wp plugin get miniorange-login-with-eve-online-google-facebook --field=version

Deactivate plugin using WP-CLI:

• wp plugin deactivate miniorange-login-with-eve-online-google-facebook

Search web server logs for suspicious plugin endpoint accesses:

grep -E "miniorange|mo_oauth|admin-ajax.php" /var/log/nginx/access.log | grep -E "POST|GET" | tail -n 200

Investigate suspicious POST requests, unknown IPs, or missing referrers.

Suggested WAF Rule Approaches (conceptual):

• Block unauthorized or unauthenticated requests to plugin admin endpoints lacking valid WordPress nonces.
• Deny POST requests from suspicious IP ranges or excessive rates.
• Restrict modification attempts to trusted sources only.

Note: Testing in monitoring mode prior to strict blocking is essential to avoid disrupting legitimate OAuth provider integrations or callbacks.

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Final Notes & Next Steps

1. If you run the miniOrange OAuth SSO plugin (slug miniorange-login-with-eve-online-google-facebook), verify and update to version 6.26.15 or later immediately.
2. If immediate update is not possible, deactivate the plugin or enable Managed-WP’s virtual patching rules.
3. Review your logs carefully for indications of abuse.
4. Apply hardening measures including least privilege, strong authentication, and rigorous access control.
5. If you need assistance implementing virtual patches or analyzing suspicious events, contact Managed-WP for expert support.

Authentication-related plugins remain prime attack targets. Managed-WP’s mission is to keep your site resilient throughout patch cycles and mitigating emerging threats. Activate essential protections now with Managed-WP Basic (Free):
https://my.wp-firewall.com/buy/wp-firewall-free-plan/

Stay secure,
Managed-WP Security Team

References and Acknowledgments

• CVE Identifier: CVE-2025-10753
• Reported by: Jonas Benjamin Friedli

(Note: Exploit code and weaponization instructions are not included here for security and ethical reasons. Managed-WP support is available to help implement mitigations.)

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