CVE-2026-6561 EyouCMS Index.php edit_adminlogo unrestricted upload
Attackers can upload malicious files via the edit_adminlogo function in EyouCMS, potentially leading to remote code execution.
- 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-2026-6561?
CVE-2026-6561 is a medium-severity vulnerability in EyouCMS, published on 19 Apr 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A vulnerability was detected in EyouCMS up to 1.7.1. This issue affects the function edit_adminlogo of the file application/admin/controller/Index.php. Performing a manipulation of the argument filename results in unrestricted upload. The attack is possible to be carried out remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-6561?
How do I fix CVE-2026-6561?
No fix has been published for CVE-2026-6561 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-6561 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6561 exists.
Sources
Also known as GHSA-fjp8-jqj5-cwp2.