CVE-2026-5599 API allows deletion of users of other instance

High 7.3 Published Updated

Users with API access can delete accounts in other instances due to missing authorization checks, affecting Venueless platform integrity.

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-2026-5599?

CVE-2026-5599 is a high-severity missing authorization vulnerability in pretix Venueless, published on 5 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A user with API access and "manage users" permission in any venueless world is able to trigger deletion of user accounts in other worlds.

Weakness: CWE-653

Which versions are affected by CVE-2026-5599?

How do I fix CVE-2026-5599?

No fix has been published for CVE-2026-5599 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-2026-5599 being exploited?

There is no known exploitation of CVE-2026-5599 in the wild and no public exploit code.

Sources

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