CVE-2026-83543: CWE-918 Server-Side Request Forgery (SSRF) in Greenshift
Description
The Greenshift WordPress plugin before 13.2.0 does not validate a user-supplied URL before fetching it server-side, allowing users with contributor-level access and above to make the server issue requests to arbitrary hosts and read the response.
CVSS v3.1
Score 4.1medium
Affected software
Greenshift
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Greenshift WordPress plugin versions prior to 13.2.0 do not validate user-supplied URLs before fetching them server-side. This lack of validation enables users with contributor-level permissions or above to exploit a server-side request forgery (SSRF) vulnerability (CWE-918). By submitting crafted URLs, an attacker can cause the server to issue requests to arbitrary hosts and read the responses, potentially exposing internal resources or sensitive data accessible from the server's network context.
Potential Impact
An attacker with contributor-level access or higher can cause the server to make arbitrary HTTP requests to internal or external systems and read the responses. This could lead to information disclosure of internal services or data accessible from the server. The CVSS score of 4.1 (medium severity) reflects limited impact as the attacker requires elevated privileges (contributor or higher) and the impact is limited to confidentiality with no integrity or availability impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level access to trusted users only and monitor for suspicious activity related to URL fetching features in the plugin.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-08-31T18:01:41.316Z
- State
- PUBLISHED
Threat ID: 6a9bb8b7acd9273b49723b77
Added to database: 09/05/2026, 06:37:43 UTC
Last enriched: 09/07/2026, 11:14:03 UTC
Last updated: 10/20/2026, 18:48:24 UTC
Views: 136
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