The FluentCRM - Marketing Automation For WordPress plugin for WordPress is vulnerable to unauthorized modification of data in versions up to, and including, 2.7.40 due to the use of an MD5 hash without a salt to control subscriptions. This makes it possible for unauthenticated attackers to unsubscribe users from lists and manage subscriptions, granted they gain access to any targeted subscribers email address.

References

• https://nvd.nist.gov/vuln/detail/CVE-2023-1430
• https://plugins.trac.wordpress.org/changeset/2899218/fluent-crm/tags/2.8.0/app/Hooks/Handlers/ExternalPages.php?old=2873074&old_path=fluent-crm%2Ftags%2F2.7.40%2Fapp%2FHooks%2FHandlers%2FExternalPages.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/de6da87e-8f7d-4120-8a1b-390ef7733d84?source=cve