WordPress Sumo plugin <= 1.34 - Cross Site Request Forgery (CSRF) Schwachstelle

A successful CSRF attack could allow an attacker to modify plugin settings, access sensitive data, or even perform actions on behalf of an authenticated user. For example, an attacker could craft a malicious link that, when clicked by a user, silently changes the Sumo plugin's configuration, potentially impacting website functionality or user experience. The blast radius is limited to the scope of actions that the Sumo plugin allows, but could still be significant depending on the plugin's capabilities and the user's permissions.

Websites using the Sumo WordPress plugin, particularly those running older versions (≤1.34), are at risk. Shared hosting environments where plugin updates are managed centrally are also particularly vulnerable, as they may not be updated promptly.

• wordpress / composer / npm:

grep -r 'sumo_csrf_token' /var/www/html/wp-content/plugins/sumo

• generic web:

curl -I https://example.com/sumo/ | grep -i 'csrf-token'

1. 2024-04-12Disclosure

   disclosure

1. Reserviert2024-03-29
2. Veröffentlicht2024-04-12
3. Geändert2024-08-02
4. EPSS aktualisiert2026-04-02

The primary mitigation is to upgrade the Sumo plugin to version 1.34.1 or later, which contains the fix for this vulnerability. As a temporary workaround, implement Web Application Firewall (WAF) rules to filter out suspicious requests that exhibit CSRF characteristics. Additionally, ensure that all user input to the Sumo plugin is properly validated and sanitized to prevent malicious data from being processed. Consider implementing CSRF tokens for sensitive actions within the plugin.

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