CVE-2026-15227 Missing Authorization Allows Editing of Foreign Reports
Authenticated users can modify reports owned by others due to missing authorization checks in Checkmk.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15227?
CVE-2026-15227 is a medium-severity missing authorization vulnerability in Checkmk, published on 31 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Missing authorization in Checkmk <2.5.0p10, <2.4.0p35, <2.3.0p49, and 2.2.0 (EOL) allows an authenticated user lacking the "Edit foreign Reports" permission to modify reports owned by other users.
Weakness: CWE-862
Which versions are affected by CVE-2026-15227?
How do I fix CVE-2026-15227?
No fix has been published for CVE-2026-15227 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-2026-15227 being exploited?
There is no known exploitation of CVE-2026-15227 in the wild and no public exploit code.
Sources
Also known as GHSA-m93w-q9x6-3m46.