CVE-2026-56694 · Symaro Security Advisory

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.

Severity (CVSS)

Base score	5.3
Severity	Medium
Version	CVSS 4.0
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
Provided by	CNA

Weaknesses

CWE-863 — Incorrect Authorization

Affected products

Vendor	Product	Versions
nanocoai	nanoclaw	0 to <2.1.0; 2.1.0

References

https://github.com/nanocoai/nanoclaw/pull/2566 (issue-tracking)
https://github.com/nanocoai/nanoclaw/commit/0eef8fafdd7c475ab5fd8d37ea566a81e74cd834 (patch)
https://www.vulncheck.com/advisories/nanoclaw-privilege-escalation-via-forged-channel-approval-callback (third-party-advisory)

Authoritative sources

This page is a snapshot. For the latest enrichment and updates, view the record on CVE.org or the NVD.

Generated from the official CVE List on 24 Jun 2026 09:35 UTC.