{"id":"CVE-2020-37280","title":"cbor-sync through 1.0.4 contains a resource exhaustion vulnerability in CBOR.decode that trusts declared array and map lengths without checking remaining input","summary":"cbor-sync through 1.0.4 contains a resource exhaustion vulnerability in CBOR.decode that trusts declared array and map lengths without checking remaining input. Remote attackers can supply a tiny crafted CBOR payload declaring huge lengt…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-789"],"published":"2026-10-12","updated":"2026-10-12","sourceUpdated":"2026-10-12T21:17:05.733","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2020-37280","references":[{"url":"https://github.com/PelionIoT/cbor-sync","label":"disclosure@vulncheck.com"},{"url":"https://github.com/PelionIoT/cbor-sync/issues/6","label":"disclosure@vulncheck.com"},{"url":"https://github.com/PelionIoT/cbor-sync/pull/4","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/cbor-sync-through-1.0.4-memory-exhaustion-via-unchecked-cbor-array-lengths","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"ingestedAt":"2026-10-12T22:05:40.349Z","slug":"CVE-2020-37280","body":"## Overview\n\ncbor-sync through 1.0.4 contains a resource exhaustion vulnerability in CBOR.decode that trusts declared array and map lengths without checking remaining input. Remote attackers can supply a tiny crafted CBOR payload declaring huge lengths to drive billions of iterations, exhausting CPU and process memory.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}