CVE-2026-56694 | NanoClaw before 2.1.0 contains a privilege escalation vulner… | CVSS 5.4 MEDIUM

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.

Metadata

CVE ID: CVE-2026-56694
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-06-22 17:09 UTC
Published: 2026-06-23 15:35 UTC
Last updated: 2026-06-23 17:03 UTC
Primary CWE: CWE-863
Incorrect Authorization
Vendor / Product: nanocoai / nanoclaw
Sources: cve.org · NVD

Severity & Metrics

5.4 MEDIUM CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
nanocoai	nanoclaw	—	0 < 2.1.0, 2.1.0

Weakness (CWE)

CWE	Source	Description
CWE-863	cna	Incorrect Authorization

CVSS scores (2)

Score	Severity	Version	Source	Vector
5.4	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
5.3	MEDIUM	4.0	cna	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

References (3)