CVE-2026-1273 PostX <= 5.0.8 - Authenticated (Administrator+) Server-Side Request Forgery via REST API Endpoints
Administrators can exploit SSRF in PostX plugin to query and modify internal services via REST API endpoints.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-1273?
CVE-2026-1273 is a high-severity server-side request forgery vulnerability in wpxpo Post Grid Gutenberg Blocks for News, Magazines, Blog Websites – PostX, published on 4 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Post Grid Gutenberg Blocks for News, Magazines, Blog Websites – PostX plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 5.0.8 via the `/ultp/v3/starter_dummy_post/` and `/ultp/v3/starter_import_content/` REST API endpoints. This makes it possible for authenticated attackers, with Administrator-level access and above, to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services.
Weakness: CWE-918
Which versions are affected by CVE-2026-1273?
How do I fix CVE-2026-1273?
No fix has been published for CVE-2026-1273 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-2026-1273 being exploited?
There is no known exploitation of CVE-2026-1273 in the wild and no public exploit code.
Sources
Also known as GHSA-7rp9-ph5m-7mh4.