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 lengths to drive billions of iterations, exhausting CPU and process memory.

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Fixes

Solution

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Workaround

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History

Tue, 13 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 13 Oct 2026 07:45:00 +0000

Type Values Removed Values Added
First Time appeared Pelioniot
Pelioniot cbor-sync
Vendors & Products Pelioniot
Pelioniot cbor-sync

Mon, 12 Oct 2026 21:00:00 +0000

Type Values Removed Values Added
Description 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 lengths to drive billions of iterations, exhausting CPU and process memory.
Title cbor-sync through 1.0.4 Memory Exhaustion via Unchecked CBOR Array Lengths
Weaknesses CWE-789
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-13T16:52:41.604Z

Reserved: 2026-10-12T19:27:44.866Z

Link: CVE-2020-37280

cve-icon Vulnrichment

Updated: 2026-10-13T16:22:07.439Z

cve-icon NVD

Status : Received

Published: 2026-10-12T21:17:05.733

Modified: 2026-10-13T17:17:12.233

Link: CVE-2020-37280

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-13T07:25:32Z

Weaknesses