CVE-2026-12516: CWE-918 Server-Side Request Forgery (SSRF) in Fediverse Embeds
The Fediverse Embeds WordPress plugin before 1.5.8 does not validate the destination of the server-side request performed by an unauthenticated media-proxying endpoint, allowing anonymous users to make the site fetch arbitrary URLs, including internal and private-network addresses, and read back the response body. This results in a full-read Server-Side Request Forgery and open proxy.
AI Analysis
Technical Summary
CVE-2026-12516 is a CWE-918 SSRF vulnerability in the Fediverse Embeds WordPress plugin versions prior to 1.5.8. The plugin fails to validate the destination of server-side requests made by an unauthenticated media-proxying endpoint. This allows anonymous attackers to induce the server to retrieve arbitrary URLs, including those on internal or private networks, and obtain the response content. This results in full-read SSRF and effectively an open proxy scenario.
Potential Impact
An attacker can leverage this vulnerability to read data from internal or private network resources that are normally inaccessible externally. The server can be used as an open proxy to fetch arbitrary URLs, potentially exposing sensitive information. The CVSS score of 5.3 reflects a medium severity impact with low complexity and no privileges required.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch is indicated in the provided data, users should monitor the vendor's announcements for updates. Until a patch is available, consider disabling or restricting access to the vulnerable media-proxying endpoint to prevent exploitation.
CVE-2026-12516: CWE-918 Server-Side Request Forgery (SSRF) in Fediverse Embeds
Description
The Fediverse Embeds WordPress plugin before 1.5.8 does not validate the destination of the server-side request performed by an unauthenticated media-proxying endpoint, allowing anonymous users to make the site fetch arbitrary URLs, including internal and private-network addresses, and read back the response body. This results in a full-read Server-Side Request Forgery and open proxy.
CVSS v3.1
Score 5.3medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-12516 is a CWE-918 SSRF vulnerability in the Fediverse Embeds WordPress plugin versions prior to 1.5.8. The plugin fails to validate the destination of server-side requests made by an unauthenticated media-proxying endpoint. This allows anonymous attackers to induce the server to retrieve arbitrary URLs, including those on internal or private networks, and obtain the response content. This results in full-read SSRF and effectively an open proxy scenario.
Potential Impact
An attacker can leverage this vulnerability to read data from internal or private network resources that are normally inaccessible externally. The server can be used as an open proxy to fetch arbitrary URLs, potentially exposing sensitive information. The CVSS score of 5.3 reflects a medium severity impact with low complexity and no privileges required.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch is indicated in the provided data, users should monitor the vendor's announcements for updates. Until a patch is available, consider disabling or restricting access to the vulnerable media-proxying endpoint to prevent exploitation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-06-17T12:41:37.963Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a4f46b8c9d9e3dbe3ae73db
Added to database: 07/09/2026, 06:59:04 UTC
Last enriched: 07/16/2026, 10:02:41 UTC
Last updated: 08/22/2026, 22:52:11 UTC
Views: 69
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