CVE-2026-51956 Missing authorization in n/a
Authenticated users can access and modify other tenants' company data by manipulating IDs, requiring an upgrade to enforce tenant isolation.
- 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-2026-51956?
CVE-2026-51956 is a high-severity missing authorization vulnerability in n/a, published on 1 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A Broken Object Level Authorization vulnerability exists in Grashjs Atlas CMMS prior to v1.6.0. An authenticated user from one tenant can read and modify another tenant's company record by changing only the numeric ID in the /company/{id} endpoint. The application does not enforce tenant-level ownership checks when accessing or updating company objects, allowing cross-tenant access and modification of company profile data.
Weakness: CWE-284
Which versions are affected by CVE-2026-51956?
How do I fix CVE-2026-51956?
No fix has been published for CVE-2026-51956 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-2026-51956 being exploited?
There is no known exploitation of CVE-2026-51956 in the wild and no public exploit code.
Sources
Also known as GHSA-6cjx-9x4p-x26w.