CVE-2026-11570 User Submitted Posts < 20260608 - Unauthenticated Stored XSS via Author Name
Unauthenticated attackers can inject malicious scripts via author names in the User Submitted Posts plugin when a specific display option is enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-11570?
CVE-2026-11570 is a medium-severity cross-site scripting vulnerability in Unknown User Submitted Posts, published on 1 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The User Submitted Posts WordPress plugin before 20260608 does not escape a submitted value before outputting it in an admin-configured display template, leading to a Stored Cross-Site Scripting that can be triggered by unauthenticated users when a non-default display option is enabled.
Which versions are affected by CVE-2026-11570?
How do I fix CVE-2026-11570?
No fix has been published for CVE-2026-11570 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-11570 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-11570 exists.
Sources
Also known as GHSA-qrfm-jqh3-mc7c.