Vulnerability · Published Jun 23, 2026 · Assigned by VulnCheck
CVE-2026-56402NanoClaw < 2.1.17 - Privilege Escalation via Unverified Approval Response Handler
Medium 6.5
In plain English
A medium-severity missing authorization in nanoclaw from nanocoai. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.4%top 68.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
References
- Pull Request issue-tracking, patch
- Patch Commit patch
- https://www.vulncheck.com/advisories/nanoclaw-privilege-escalation-via-unverified-approval-response-handler third-party-advisory