CVE-2026-56402 | NanoClaw before 2.1.17 contains a privilege escalation vulne… | CVSS 6.5 MEDIUM

Description

NanoClaw before 2.1.17 contains a privilege escalation vulnerability in the handleApprovalsResponse function that fails to verify responder role authorization. Attackers with a valid questionId can approve or reject privileged actions like package installation by submitting approval response payloads without proper role validation.

Metadata

CVE ID: CVE-2026-56402
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-06-21 12:37 UTC
Published: 2026-06-23 15:34 UTC
Last updated: 2026-06-23 17:47 UTC
Primary CWE: CWE-862
Missing Authorization
Vendor / Product: nanocoai / nanoclaw
Sources: cve.org · NVD

Severity & Metrics

6.5 MEDIUM CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
nanocoai	nanoclaw	—	0 < 2.1.17, 2.1.17

Weakness (CWE)

CWE	Source	Description
CWE-862	cna	Missing Authorization

CVSS scores (2)

Score	Severity	Version	Source	Vector
7.1	HIGH	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
6.5	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

References (3)