CVE-2026-12686 Incorrect authorisation in Adiss’s Biloop

Critical 9.3 Published Updated

Authenticated users can bypass authorization checks to access and modify other companies' sensitive data in Adiss Biloop.

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-2026-12686?

CVE-2026-12686 is a critical missing authorization vulnerability in Adiss Biloop, published on 6 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An authenticated user could manipulate a company ID parameter in a POST request to the backend to gain unauthorised access to other companies hosted within the same subdomain environment. The application does not adequately verify whether the requested company ID belongs to the authenticated user’s session, resulting in a cross-tenant authorisation bypass. If this vulnerability is successfully exploited, it allows unauthorised access to sensitive customer information, including billing data, and may enable the unauthorised modification of third-party data.

Weakness: CWE-639

Which versions are affected by CVE-2026-12686?

How do I fix CVE-2026-12686?

No fix has been published for CVE-2026-12686 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-2026-12686 being exploited?

There is no known exploitation of CVE-2026-12686 in the wild and no public exploit code.

Sources

Also known as GHSA-67j5-pj6c-m82p.

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