CVE-2026-56694Network attack vector

Scoped-admin privilege escalation via forged channel callback

Published Jun 23, 2026 · Updated Jun 23, 2026

Incorrect authorization in NanoCo NanoClaw before 2.1.0 allows remote authenticated users to connect channels to unauthorized agent groups. The handleChannelApprovalResponse handler accepts forged or stale connect callback values without checking the approver's admin rights on the named target group. Scoped-admin access to one group is sufficient to wire an unapproved messaging channel to another group, enabling unauthorized observation or control of restricted group activity.

CVSS severity5.3
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in NanoCo NanoClaw before 2.1.0 allows remote authenticated users to connect channels to unauthorized agent groups. The handleChannelApprovalResponse handler accepts forged or stale connect callback values without checking the approver's admin rights on the named target group. Scoped-admin access to one group is sufficient to wire an unapproved messaging channel to another group, enabling unauthorized observation or control of restricted group activity.

The record

CVE
CVE-2026-56694
Published
Jun 23, 2026
Updated
Jun 23, 2026
Vendor
NanoCo
Product
NanoClaw
Classifications
CWE-863, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 23, 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 <2.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

NanoCo · NanoClawversion=0 <2.1.0

Published CVSS scores

5.4VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
5.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1068Exploitation for Privilege Escalation

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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