Content Syndication Toolkit <= 1.3 - Unauthenticated Server-Side Request Forgery via 'url' Parameter

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Summary

CVECVE-2026-3478
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-21 04:17:25 UTC
Updated2026-04-24 16:27:44 UTC
DescriptionThe Content Syndication Toolkit plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 1.3 via the redux_p AJAX action in the bundled ReduxFramework library. The plugin registers a proxy endpoint (wp_ajax_nopriv_redux_p) that is accessible to unauthenticated users. The proxy() method in the Redux_P class takes a URL directly from $_GET['url'] without any validation (the regex is set to /.*/ which matches all URLs) and passes it to wp_remote_request(), which does not have built-in SSRF protection like wp_safe_remote_request(). There is no authentication check, no nonce verification, and no URL restriction. The response from the requested URL is then returned to the attacker, making this a full-read SSRF. This makes it possible for unauthenticated attackers to make web requests to arbitrary locations originating from the web application, which can be used to query and modify information from internal services, scan internal network ports, or interact with cloud metadata endpoints.

Risk And Classification

Primary CVSS: v3.1 7.2 HIGH from [email protected]

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

EPSS: 0.001550000 probability, percentile 0.359310000 (date 2026-04-24)

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

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
3.1CNADECLARED7.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Benmoody Content Syndication Toolkit affected 1.3 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/content-syndication-toolkit/tags/1.3/inc/ReduxFramewo... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/content-syndication-toolkit/trunk/inc/ReduxFramework/... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/content-syndication-toolkit/trunk/inc/ReduxFramework/... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/content-syndication-toolkit/tags/1.3/inc/ReduxFramewo... [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/f8381866-d991-4638-ab4d-3b869... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/content-syndication-toolkit/tags/1.3/inc/ReduxFramewo... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/content-syndication-toolkit/trunk/inc/ReduxFramework/... [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: Youcef Hamdani (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-03-20T15:09:53.000ZDisclosed
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