CVE-2026-72690 Attendize Attendize - Cross-Tenant Authorization Bypass
Authenticated attackers can inject persistent survey questions into other organizers' events due to missing tenant isolation checks.
- 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-2026-72690?
CVE-2026-72690 is a medium-severity missing authorization vulnerability in Attendize, published on 10 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An improper authorization vulnerability in Attendize through commit 9289acb allows an authenticated remote attacker to inject persistent mandatory survey questions into another organizer's events via the POST /event/{event_id}/question/create endpoint. The postCreateEventQuestion method loads the target event without the tenant-isolation scope, enabling cross-tenant writes; the injected question cannot be removed by the victim because the victim's account-scoped delete path cannot resolve a question owned by another tenant.
Weakness: CWE-639
Which versions are affected by CVE-2026-72690?
How do I fix CVE-2026-72690?
No fix has been published for CVE-2026-72690 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-2026-72690 being exploited?
There is no known exploitation of CVE-2026-72690 in the wild and no public exploit code.
Sources
Also known as GHSA-6c35-rp78-p585.