CVE-2026-6572 Collabora KodExplorer fileUpload Endpoint share.class.php improper authorization
Remote attackers can bypass authorization checks in the fileUpload endpoint to access or modify shared files.
- 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-2026-6572?
CVE-2026-6572 is a medium-severity missing authorization vulnerability in Collabora KodExplorer, published on 19 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A security vulnerability has been detected in Collabora KodExplorer up to 4.52. Affected by this issue is some unknown functionality of the file /app/controller/share.class.php of the component fileUpload Endpoint. The manipulation of the argument fileUpload leads to improper authorization. Remote exploitation of the attack is possible. The attack's complexity is rated as high. The exploitation is known to be difficult. The exploit has been disclosed publicly 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-2026-6572?
How do I fix CVE-2026-6572?
No fix has been published for CVE-2026-6572 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-6572 being exploited?
There is no known exploitation of CVE-2026-6572 in the wild and no public exploit code.
Sources
Also known as GHSA-3v8q-qmgr-97jh.