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

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2026-7798
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-22 09:16:32 UTC
Updated2026-05-22 09:16:32 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 5.4 MEDIUM from [email protected]

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

EPSS: 0.001630000 probability, percentile 0.369520000 (date 2026-05-28)

Problem Types: CWE-918 | CWE-918 CWE-918 Server-Side Request Forgery (SSRF)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.4MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
3.1CNADECLARED5.4MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Techjewel FluentCRM Email Newsletter Automation Email Marketing Email Campaigns Optins Leads And CRM Solution affected 2.9.87 semver Not specified

References

ReferenceSourceLinkTags
www.wordfence.com/threat-intel/vulnerabilities/id/5c3ca2d7-7af9-401f-bc5a-1796c... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/fluent-crm/tags/2.9.87/app/Hooks/Handlers/ExternalPag... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/fluent-crm/trunk/app/Hooks/Handlers/ExternalPages.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/fluent-crm/tags/2.9.87/app/Hooks/Handlers/ExternalPag... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/fluent-crm/tags/2.9.87/app/Hooks/Handlers/ExternalPag... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/fluent-crm/trunk/app/Hooks/Handlers/ExternalPages.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/fluent-crm/trunk/app/Hooks/Handlers/ExternalPages.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Saleh Elsayed (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-05-04T19:34:28.000ZVendor Notified
CNA2026-05-21T19:20:33.000ZDisclosed
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