CVE-2026-56694
MEDIUM EPSS 6.8%
Published Jun 23, 20261w ago · Modified Jun 23, 20261w ago
5.3 CVSS 4.0
Published Jun 23, 2026 1w ago
Last Modified Jun 23, 2026 1w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
6.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-863 Incorrect Authorization Authorization
References 3
- github.com https://github.com/nanocoai/nanoclaw/commit/0eef8fafdd7c475ab5fd8d37ea566a81e74cd834
- github.com https://github.com/nanocoai/nanoclaw/pull/2566
- vulncheck.com https://www.vulncheck.com/advisories/nanoclaw-privilege-escalation-via-forged-channel-approval-callback
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.