What’s Vulnerable › Vulnerabilities

CVE-2024-13646: Single-user-chat <= 0.5 - Authenticated (Subscriber+) Limited Options Update

• Severity: high (CVSS 8.1 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: 2025-01-30 · updated 2026-06-17
• Weakness: CWE-285

Description

The Single-user-chat plugin for WordPress is vulnerable to unauthorized modification of data that can lead to a denial of service due to insufficient validation on the 'single_user_chat_update_login' function in all versions up to, and including, 0.5. This makes it possible for authenticated attackers, with subscriber-level access and above, to update option values to 'login' on the WordPress site. This may be leveraged to update an option that would create an error on the site and deny service to legitimate users or be used to set some values to true such as registration.

Affected products

• aakashbhagat23 Single-user-chat: through 0.5

References

• https://plugins.trac.wordpress.org/browser/single-user-chat/trunk/single-user-chat.php#L326
• https://www.wordfence.com/threat-intel/vulnerabilities/id/8a4978c1-087f-4784-9691-91ca5044f60a?source=cve

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