CVE-2026-86240 liufee FeehiCMS UEditor Uploader.php catchImage server-side request forgery
Remote attackers can exploit a server-side request forgery vulnerability in FeehiCMS UEditor to access internal resources or bypass security controls.
- 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-2026-86240?
CVE-2026-86240 is a medium-severity server-side request forgery vulnerability in liufee FeehiCMS, published on 7 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A security flaw has been discovered in liufee FeehiCMS up to 2.1.1. This affects the function catchImage of the file backend/widgets/ueditor/Uploader.php of the component UEditor. The manipulation of the argument source[] results in server-side request forgery. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Weakness: CWE-918
Which versions are affected by CVE-2026-86240?
How do I fix CVE-2026-86240?
No fix has been published for CVE-2026-86240 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-2026-86240 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-86240 exists.
Sources
Also known as GHSA-8qvp-xqpw-pvgg.