CVE-2026-3478 json
Content Syndication Toolkit <= 1.3 - Unauthenticated Server-Side Request Forgery via 'url' Parameter
published 2026-03-21 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-14149
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 21%
- public exploits
- 0
- none known
Summary
The 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.
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 7 mo ago
Exploit prediction
0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
Affected products
- benmoody Content Syndication Toolkit
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/f8381866-d991-4638-ab4d-3b8697acf414?source=cve
- plugins.trac.wordpress.org /browser/content-syndication-toolkit/trunk/inc/ReduxFramework/ReduxCore/inc/class.p.php#L219
- plugins.trac.wordpress.org /browser/content-syndication-toolkit/tags/1.3/inc/ReduxFramework/ReduxCore/inc/class.p.php#L219
- plugins.trac.wordpress.org /browser/content-syndication-toolkit/trunk/inc/ReduxFramework/ReduxCore/inc/class.p.php#L161
- plugins.trac.wordpress.org /browser/content-syndication-toolkit/tags/1.3/inc/ReduxFramework/ReduxCore/inc/class.p.php#L161
- plugins.trac.wordpress.org /browser/content-syndication-toolkit/trunk/inc/ReduxFramework/ReduxCore/inc/class.p.php#L7
- plugins.trac.wordpress.org /browser/content-syndication-toolkit/tags/1.3/inc/ReduxFramework/ReduxCore/inc/class.p.php#L7
Sources
- CVE List CVE-2026-3478
- NVD CVE-2026-3478
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.