CVE-2020-37280 cbor-sync - Denial of Service

cbor-sync <= 1.0.4 contains a denial of service caused by trusting declared array and map lengths without validating remaining input in CBOR.decode, letting remote attackers exhaust CPU and memory by crafted payloads.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.54% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
12 October 2026
Updated
15 October 2026
Weakness
CWE-789

Vendor fix

Update to the latest version beyond 1.0.4.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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