# CVE-2026-7798: WPManageNinja FluentCRM Blind SSRF via SubscribeURL

Source: https://junglewise.ai/threats/cve-2026-7798-wpmanageninja-fluentcrm-blind-ssrf-via-subscribeurl  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-22. Updated: 2026-05-22  
License: CC BY 4.0 with a link back

CVE-2026-7798 · Severity: medium · CVSS 5.4 · Published 2026-05-22

FluentCRM, a popular WordPress plugin for email marketing and customer relationship management, contains a security flaw that could allow attackers to use your web server as a proxy. By exploiting this vulnerability, an unauthorized person could force your website to send requests to internal or external systems, potentially exposing sensitive internal data or interacting with private services. This risk is highest for new installations that have not yet configured their email bounce handling settings.

Vendors: [WPManageNinja](https://junglewise.ai/threats/vendors/wpmanageninja).

## Quick answers

**Is CVE-2026-7798 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-7798 being exploited in the wild.

**How severe is CVE-2026-7798?** Medium severity, with a CVSS score of 5.4, published 22 May 2026.

**Which products and versions are affected?** WPManageNinja FluentCRM Up to and including 2.9.87.

**Is there a fix for CVE-2026-7798?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-7798 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-7798?** Check whether you run WPManageNinja FluentCRM at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A Blind Server-Side Request Forgery (SSRF) vulnerability exists in FluentCRM's ExternalPages.php handler due to insufficient validation of the 'SubscribeURL' parameter. Unauthenticated attackers can trigger arbitrary web requests from the application server, which can be leveraged to probe internal network services or interact with cloud metadata endpoints. The vulnerability is exploitable only if the SES bounce handling key ('_fc_bounce_key') has not been initialized; once a site administrator visits the bounce configuration page, a random key is generated and stored, which effectively mitigates the unauthenticated access path. Users should update to a version beyond 2.9.87 or ensure their bounce handling configuration is initialized.

## Affected products

- WPManageNinja FluentCRM Up to and including 2.9.87

## Timeline

- 2026-05-22: disclosed: Vulnerability published by Wordfence and NVD

## References

- [https://plugins.trac.wordpress.org/browser/fluent-crm/tags/2.9.87/app/Hooks/Handlers/ExternalPages.php](https://plugins.trac.wordpress.org/browser/fluent-crm/tags/2.9.87/app/Hooks/Handlers/ExternalPages.php)
- [https://plugins.trac.wordpress.org/browser/fluent-crm/tags/2.9.87/app/Hooks/Handlers/ExternalPages.php](https://plugins.trac.wordpress.org/browser/fluent-crm/tags/2.9.87/app/Hooks/Handlers/ExternalPages.php)
- [https://plugins.trac.wordpress.org/browser/fluent-crm/tags/2.9.87/app/Hooks/Handlers/ExternalPages.php](https://plugins.trac.wordpress.org/browser/fluent-crm/tags/2.9.87/app/Hooks/Handlers/ExternalPages.php)
- [https://plugins.trac.wordpress.org/browser/fluent-crm/trunk/app/Hooks/Handlers/ExternalPages.php](https://plugins.trac.wordpress.org/browser/fluent-crm/trunk/app/Hooks/Handlers/ExternalPages.php)
- [https://plugins.trac.wordpress.org/browser/fluent-crm/trunk/app/Hooks/Handlers/ExternalPages.php](https://plugins.trac.wordpress.org/browser/fluent-crm/trunk/app/Hooks/Handlers/ExternalPages.php)
- [https://plugins.trac.wordpress.org/browser/fluent-crm/trunk/app/Hooks/Handlers/ExternalPages.php](https://plugins.trac.wordpress.org/browser/fluent-crm/trunk/app/Hooks/Handlers/ExternalPages.php)
- [https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3532271%40fluent-crm&new=3532271%40fluent-crm&sfp_email=&sfph_mail=](https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3532271%40fluent-crm&new=3532271%40fluent-crm&sfp_email=&sfph_mail=)