CVE-2026-56694

NanoClaw < 2.1.0 - Privilege Escalation via Forged Channel Approval Callback

Published Jun 23, 2026 CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Description
NanoClaw before 2.1.0 contains a privilege escalation vulnerability in the channel-registration approval flow where handleChannelApprovalResponse fails to validate admin privileges over target agent groups. Scoped admins can submit forged or stale connect callback values to wire messaging channels into out-of-scope agent groups, exposing unauthorized groups to unapproved channels and enabling unauthorized observation or control of restricted agent group activity.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:nanoco:nanoclaw:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Nanoco
Nanoco nanoclaw
Vendors & Products Nanoco
Nanoco nanoclaw
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description NanoClaw before 2.1.0 contains a privilege escalation vulnerability in the channel-registration approval flow where handleChannelApprovalResponse fails to validate admin privileges over target agent groups. Scoped admins can submit forged or stale connect callback values to wire messaging channels into out-of-scope agent groups, exposing unauthorized groups to unapproved channels and enabling unauthorized observation or control of restricted agent group activity.
Title NanoClaw < 2.1.0 - Privilege Escalation via Forged Channel Approval Callback
Weaknesses CWE-863
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Sep 17, 2026, 6:57 PM
Reserved
Jun 22, 2026, 5:09 PM
Status
Deferred
Published
Jun 23, 2026, 4:17 PM
Modified
Oct 26, 2026, 11:10 AM