CSRF in Youtag Two-Factor Authentication (Formerly Ip Vault)
CVE-2026-8903
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.
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (9.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 9.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.001
Affected products
- Youtag Two-Factor Authentication (Formerly Ip Vault) — versions 0
Weakness classification (CWE)
References
- www.wordfence.com/threat-intel/vulnerabilities/id/5a58f809-d051-4841-a1da-7bc1c…
- plugins.trac.wordpress.org/browser/ip-vault-wp-firewall/trunk/includes/admin-se…
- plugins.trac.wordpress.org/browser/ip-vault-wp-firewall/trunk/includes/admin-se…
- plugins.trac.wordpress.org/browser/ip-vault-wp-firewall/trunk/ip-vault.php
Frequently asked questions
- What is CVE-2026-8903?
- CVE-2026-8903 is a medium-severity vulnerability in Youtag Two-Factor Authentication (Formerly Ip Vault), classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2026-05-27.
- How severe is CVE-2026-8903?
- Medium severity. CVSS v3 base score is 4.3 out of 10.