{"id":"CVE-2026-56402","title":"NanoClaw before 2.1.17 contains a privilege escalation vulnerability in the handleApprovalsResponse function that fails to verify responder role authorization","summary":"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 li…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","cwe":["CWE-862"],"vendor":"nanocoai","product":"nanoclaw","affected":["nanoclaw < 2.1.17"],"published":"2026-06-23","updated":"2026-09-17","sourceUpdated":"2026-09-17T18:16:51.323","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-56402","references":[{"url":"https://github.com/nanocoai/nanoclaw/commit/6227bd1a5b016fb1eb76411bb6681b4c924a51a0","label":"disclosure@vulncheck.com"},{"url":"https://github.com/nanocoai/nanoclaw/pull/2478","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/nanoclaw-privilege-escalation-via-unverified-approval-response-handler","label":"disclosure@vulncheck.com"},{"url":"https://github.com/nanocoai/nanoclaw/pull/2478","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-06-23T17:46:15.703007Z"},"epss":0.00376,"epssPercentile":0.31494,"ingestedAt":"2026-09-17T18:25:15.971Z","slug":"CVE-2026-56402","body":"## Overview\n\nNanoClaw 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}