CVE-2024-21909: Peteroupc Cbor

High severity, CVSS 7.5. EPSS: 1.1% chance of exploitation in the next 30 days.

PeterO.Cbor versions 4.0.0 through 4.5.0 are vulnerable to a denial of service vulnerability. An attacker may trigger the denial of service condition by providing crafted data to the DecodeFromBytes or other decoding mechanisms in PeterO.Cbor. Depending on the usage of the library, an unauthenticated and remote attacker may be able to cause the denial of service condition.

Affected products

• Peteroupc Cbor: from 4.0.0, before 4.5.1 (fixed in 4.5.1)

Published 2024-01-03. Last modified 2026-07-14.