Vulnerability · Published Aug 10, 2026 · Assigned by TuranSec

CVE-2026-72690Attendize Attendize - Cross-Tenant Authorization Bypass

Medium 5.4

In plain English

A medium-severity authorization bypass via user-controlled key in Attendize from Attendize. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).

Severity (CVSS 3.1)5.4Medium

Exploit odds (30 days)0.4%top 64.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
Attendize	Attendize	0 – through 9289acb

Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

References

Attendize GitHub Repository third-party-advisory