Cross-Tenant Insecure Direct Object Reference in Maxun API Handlers
CVE-2026-56767

8.7HIGH

Key Information:

Vendor

Getmaxun

Status
Maxun
Vendor
CVE Published:
25 June 2026

What is CVE-2026-56767?

Maxun versions prior to 0.0.42 are susceptible to a cross-tenant insecure direct object reference vulnerability within their storage and webhook API handlers. This flaw permits authenticated users to gain unauthorized access to other users' robots and OAuth tokens, compromising the integrity of user data. Attackers can exploit this vulnerability to read plaintext Google and Airtable access tokens, as well as alter, delete, or execute other users' robots by circumventing the ownership checks established in the API endpoints.

Affected Version(s)

maxun 0 < 0.0.42

maxun 0.0.42

References

https://github.com/getmaxun/maxun/issues/1079
technical-description
https://github.com/getmaxun/maxun/pull/1088
issue-tracking
https://github.com/getmaxun/maxun/commit/11db0257531f1c23...
patch

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

George Chen
.