CVE-2026-83543 Greenshift < 13.2.0 - Contributor+ SSRF via get-csv-to-json REST Endpoint
Contributors can exploit an unvalidated URL in the Greenshift plugin to force the server to fetch arbitrary internal or external resources.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-83543?
CVE-2026-83543 is a medium-severity server-side request forgery vulnerability in Unknown Greenshift, published on 5 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official 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.
Weakness: CWE-918
Which versions are affected by CVE-2026-83543?
How do I fix CVE-2026-83543?
No fix has been published for CVE-2026-83543 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-83543 being exploited?
There is no known exploitation of CVE-2026-83543 in the wild and no public exploit code.
Sources
Also known as GHSA-2737-p883-rmrx.