CVE-2026-56402

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.

CVSS Vector

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