CVE-2026-72547 Attendize Attendize - Insecure Direct Object Reference
Authenticated event organizers can inject attendee data into events owned by other accounts due to missing ownership verification.
- 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-2026-72547?
CVE-2026-72547 is a high-severity missing authorization vulnerability in Attendize, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An insecure direct object reference vulnerability in Attendize through commit 9289acb allows any authenticated event organiser to bulk import attendees into events belonging to other accounts via the postImportAttendee endpoint. The endpoint loads the target event by ID without verifying ownership against the requesting organiser account. An attacker can inject bulk attendee data into any event in the system regardless of account boundaries.
Weakness: CWE-639
Which versions are affected by CVE-2026-72547?
How do I fix CVE-2026-72547?
No fix has been published for CVE-2026-72547 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-2026-72547 being exploited?
There is no known exploitation of CVE-2026-72547 in the wild and no public exploit code.
Sources
Also known as GHSA-pm9m-4jvw-f3q5.