CVE-2026-7798

MEDIUM NUCLEI

FluentCRM <= 2.9.87 - Unauthenticated Blind Server-Side Request Forgery via 'SubscribeURL' Parameter

Title source: cna
STIX 2.1

Exploitation Summary

CVE-2026-7798 has a Nuclei detection template available — see the Nuclei card below for the Shodan/FOFA recon queries.

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.

Nuclei Templates (1)

WordPress FluentCRM <= 2.9.87 - Unauthenticated Blind SSRF
MEDIUMby 0x_Akoko
Shodan: http.html:"fluent-crm"
FOFA: body="fluent-crm"

Scores

CVSS v3 5.4
EPSS 0.0069
EPSS Percentile 49.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-918
Status published
Products (1)
techjewel/FluentCRM – Email Newsletter, Automation, Email Marketing, Email Campaigns, Optins, Leads, and CRM Solution < 2.9.87
Published May 22, 2026
Tracked Since May 22, 2026