CVE-2026-8903
Deferred Deferred - Pending Action
Cross-Site Request Forgery in Two-factor Authentication WordPress Plugin

Publication date: 2026-05-27

Last updated on: 2026-05-27

Assigner: Wordfence

Description
The Two-factor authentication (formerly IP Vault) plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.1. This is due to missing or incorrect nonce validation on the ipv_save_changes function. This makes it possible for unauthenticated attackers to modify the plugin's firewall and two-factor authentication settings — including the operating mode, request include/exclude rules, authentication slug, and log retention period — potentially disabling protection entirely via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
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Meta Information
Published
2026-05-27
Last Modified
2026-05-27
Generated
2026-06-16
AI Q&A
2026-05-27
EPSS Evaluated
2026-06-15
NVD
CVE-2026-8903
EUVD
EUVD-2026-32073
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
wp_two_factor_authentication two_factor_authentication to 2.1 (inc)
wordfence two-factor_authentication to 2.1 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-352 The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.
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Executive Summary

The Two-factor authentication plugin for WordPress (formerly IP Vault) has a vulnerability known as Cross-Site Request Forgery (CSRF) in all versions up to and including 2.1. This vulnerability arises because the plugin's function ipv_save_changes lacks proper nonce validation. As a result, an attacker who is not authenticated can trick a site administrator into performing an action, such as clicking a malicious link, which allows the attacker to modify critical plugin settings.

  • The attacker can change firewall and two-factor authentication settings.
  • Settings that can be modified include operating mode, request include/exclude rules, authentication slug, and log retention period.
  • This can potentially disable protection entirely on the site.
Impact Analysis

This vulnerability can impact you by allowing an unauthenticated attacker to alter your WordPress site's security settings without your consent. Specifically, they can disable or weaken the two-factor authentication and firewall protections, which are critical for securing your site.

  • Potential disabling of two-factor authentication protection.
  • Modification of firewall rules that could expose the site to further attacks.
  • Changing log retention periods, which may affect your ability to audit or investigate security incidents.
  • Overall increased risk of unauthorized access and compromise of the site.
Mitigation Strategies

To mitigate this vulnerability, you should update the Two-factor authentication plugin for WordPress to a version later than 2.1 where the nonce validation issue in the ipv_save_changes function is fixed.

Additionally, ensure that site administrators are cautious about clicking on untrusted links to avoid being tricked into performing actions that could disable protection.

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