WordPress security changelog
MEDIUM CVE-2026-7798 Deferred

FluentCRM – Email Newsletter, Automation, Email Marketing, Email Campaigns, Optins, Leads, and CRM Solution: Server-side request forgery

FluentCRM – Email Newsletter, Automation, Email Marketing, Email Campaigns, Optins, Leads, and CRM Solution is affected by server-side request forgery. The vulnerable path is reachable without authentication. The vulnerable server can be induced to make attacker-selected network requests. The published affected range is <= 2.9.87.

CVE / CNA score 5.4 CVSS 3.1 · security@wordfence.com
NVD score Pending NVD has not published its own CVSS assessment.
Component
FluentCRM – Email Newsletter, Automation, Email Marketing, Email Campaigns, Optins, Leads, and CRM Solution
Plugin slug
fluent-crm
Affected
<= 2.9.87
Safe version
See mitigation notes
Published
May 22, 2026
Weakness
CWE-918 — Server-Side Request Forgery (SSRF)

This CVE was published May 22, 2026 and is one of 4 known issues for this plugin.

What to do

Update, patch or deactivate.

No fixed release is identified. Update FluentCRM – Email Newsletter, Automation, Email Marketing, Email Campaigns, Optins, Leads, and CRM Solution when a release after 2.9.87 becomes available; until then, disable and remove it when the site's risk warrants. The official upstream changelog lists version 3.1.10, which is newer than the published affected range. Its changelog does not clearly confirm this specific fix, so it is not counted as a known-safe release.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical 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.

CVE / CNA vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

References

Primary and upstream sources