CVE-2026-72547
High
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.
SeverityHigh
CVSS7.1
Exploit probability—
ProductAttendize
PublishedAug 11, 2026
First seenAug 11, 2026
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Attendize Attendize | v ≤ 9289acb | — |
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