CVE-2024-9820: WP 2FA with Telegram <= 3.0 - Two-Factor Authentication Bypass

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-10-15 · updated 2026-06-17
Weakness: CWE-784

Description

The WP 2FA with Telegram plugin for WordPress is vulnerable to Two-Factor Authentication Bypass in versions up to, and including, 3.0. This is due to the two-factor code being stored in a cookie, which makes it possible to bypass two-factor authentication.

Affected products

dueclic Wp 2Fa With Telegram: before 3.1 — fixed in 3.1

How to fix

Upgrade to a fixed version: dueclic Wp 2Fa With Telegram 3.1. Check the vendor advisory for mitigations.

References

https://plugins.trac.wordpress.org/browser/two-factor-login-telegram/tags/3.0/includes/class-wp-factor-telegram-plugin.php#L228
https://www.wordfence.com/threat-intel/vulnerabilities/id/ccd73030-7185-4302-b3fd-29cbbe716e3e?source=cve

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