CVE-2026-56767Network attack vector

Cross-tenant robot takeover via missing ownership checks

Published Jun 25, 2026 · Updated Jun 25, 2026

Authorization bypass in Maxun before 0.0.42 allows remote authenticated users to access other tenants’ robots and OAuth tokens. Robot, SDK, storage, and webhook handlers query attacker-supplied robot identifiers without constraining database lookups to the authenticated user ID. Any account can read plaintext Google or Airtable tokens and can modify, delete, duplicate, execute, or abort another tenant’s robots when an object identifier is known.

CVSS severity8.7
High
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Maxun before 0.0.42 allows remote authenticated users to access other tenants’ robots and OAuth tokens. Robot, SDK, storage, and webhook handlers query attacker-supplied robot identifiers without constraining database lookups to the authenticated user ID. Any account can read plaintext Google or Airtable tokens and can modify, delete, duplicate, execute, or abort another tenant’s robots when an object identifier is known.

The record

CVE
CVE-2026-56767
Published
Jun 25, 2026
Updated
Jun 25, 2026
Vendor
Maxun
Product
Maxun
Classifications
CWE-862, T1190, T1528
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <0.0.42

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Maxun · Maxunversion=0 <0.0.42

Published CVSS scores

8.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1190Exploit Public-Facing Application
T1528Steal Application Access Token

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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