What’s Vulnerable › Vulnerabilities

CVE-2026-56402: NanoClaw < 2.1.17 - Privilege Escalation via Unverified Approval Response Handler

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-23 · updated 2026-10-26
• Weakness: CWE-862

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

• nanocoai NanoClaw: before 2.1.17 — fixed in 2.1.17

How to fix

Upgrade to a fixed version: nanocoai NanoClaw 2.1.17. Check the vendor advisory for mitigations.

References

• https://github.com/nanocoai/nanoclaw/commit/6227bd1a5b016fb1eb76411bb6681b4c924a51a0
• https://github.com/nanocoai/nanoclaw/pull/2478
• https://www.vulncheck.com/advisories/nanoclaw-privilege-escalation-via-unverified-approval-response-handler
• https://github.com/nanocoai/nanoclaw/pull/2478

Get alerted when CVE-2026-56402 or the next vulnerability affects your stack