Vulnerability · Published May 22, 2026 · Assigned by Wordfence
CVE-2026-7798FluentCRM <= 2.9.87 - Unauthenticated Blind Server-Side Request Forgery via 'SubscribeURL' Parameter
Medium 5.4
In plain English
A medium-severity server-side request forgery in FluentCRM – Email Newsletter, Automation, Email Marketing, Email Campaigns, Optins, Leads, and CRM Solution from techjewel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei.
Official description
The FluentCRM – Email Newsletter, Automation, Email Marketing, Email Campaigns, Optins, Leads, and CRM Solution plugin for WordPress is vulnerable to Blind Server-Side Request Forgery in all versions up to, and including, 2.9.87 via the 'SubscribeURL' parameter. This makes it possible for unauthenticated attackers to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services. Exploitation requires that the SES bounce handling key ('_fc_bounce_key') has never been stored (i.e., the site is in its default/unconfigured state with respect to SES bounce handling) as visiting the bounce configuration page auto-generates and stores a random key that causes the authentication check to evaluate correctly and reject unauthenticated requests.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| techjewel | FluentCRM – Email Newsletter, Automation, Email Marketing, Email Campaigns, Optins, Leads, and CRM Solution | 0 – through 2.9.87 |
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/5c3ca2d7-7af9-401f-bc5a-1796c6253cb0?source=cve
- https://plugins.trac.wordpress.org/browser/fluent-crm/trunk/app/Hooks/Handlers/ExternalPages.php#L113
- https://plugins.trac.wordpress.org/browser/fluent-crm/tags/2.9.87/app/Hooks/Handlers/ExternalPages.php#L113
- https://plugins.trac.wordpress.org/browser/fluent-crm/trunk/app/Hooks/Handlers/ExternalPages.php#L85
- https://plugins.trac.wordpress.org/browser/fluent-crm/tags/2.9.87/app/Hooks/Handlers/ExternalPages.php#L85
- https://plugins.trac.wordpress.org/browser/fluent-crm/trunk/app/Hooks/Handlers/ExternalPages.php#L87
- https://plugins.trac.wordpress.org/browser/fluent-crm/tags/2.9.87/app/Hooks/Handlers/ExternalPages.php#L87
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3532271%40fluent-crm&new=3532271%40fluent-crm&sfp_email=&sfph_mail=