CVE-2026-72547
Attendize Attendize - Insecure Direct Object Reference
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.
INFO
Published Date :
Aug. 11, 2026, 12:17 p.m.
Last Modified :
Oct. 24, 2026, 3:10 p.m.
Remotely Exploit :
No
Source :
309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c | ||||
| CVSS 3.1 | HIGH | MITRE-CVE |
Solution
- Validate organiser permissions for target events.
- Enforce ownership checks on event IDs.
- Implement access controls for attendee import.
- Update the application to the latest version.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-72547.
| URL | Resource |
|---|---|
| https://github.com/Attendize/Attendize |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72547 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-72547
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-72547 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72547 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 24, 2026
Action Type Old Value New Value Changed Translation Title: Attendize Attendize - Insecure Direct Object Reference, Description: Una vulnerabilidad de referencia directa insegura a objetos en Attendize hasta el commit 9289acb permite a cualquier organizador de eventos autenticado importar asistentes de forma masiva en eventos pertenecientes a otras cuentas a través del endpoint postImportAttendee. El endpoint carga el evento objetivo por ID sin verificar la propiedad frente a la cuenta del organizador solicitante. Un atacante puede inyectar datos de asistentes de forma masiva en cualquier evento del sistema, independientemente de los límites de la cuenta. Title: Attendize Attendize - Insecure Direct Object Reference, Description: Una vulnerabilidad de referencia directa insegura a objetos en Attendize hasta el commit 9289acb permite a cualquier organizador de eventos autenticado importar asistentes de forma masiva en eventos pertenecientes a otras cuentas a través del endpoint postImportAttendee. El endpoint carga el evento objetivo por ID sin verificar la propiedad frente a la cuenta del organizador solicitante. Un atacante puede inyectar datos de asistentes de forma masiva en cualquier evento del sistema, independientemente de los límites de la cuenta. -
CVE Translated by [email protected]
Oct. 23, 2026
Action Type Old Value New Value Added Translation Title: Attendize Attendize - Insecure Direct Object Reference, Description: Una vulnerabilidad de referencia directa insegura a objetos en Attendize hasta el commit 9289acb permite a cualquier organizador de eventos autenticado importar asistentes de forma masiva en eventos pertenecientes a otras cuentas a través del endpoint postImportAttendee. El endpoint carga el evento objetivo por ID sin verificar la propiedad frente a la cuenta del organizador solicitante. Un atacante puede inyectar datos de asistentes de forma masiva en cualquier evento del sistema, independientemente de los límites de la cuenta. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 11, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-72547', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-11T15:09:51.671249Z'} -
New CVE Received by 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
Aug. 11, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Attendize', 'product': 'Attendize', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'custom', 'lessThanOrEqual': '9289acb'}]}] Added 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N Added CWE CWE-639 Added Reference https://github.com/Attendize/Attendize