Denial of service in CBOR library

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Summary

CVECVE-2024-21909
StatePUBLISHED
AssignerVulnCheck
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-01-03 16:15:09 UTC
Updated2026-07-14 23:17:14 UTC
DescriptionPeterO.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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.010610000 probability, percentile 0.607650000 (date 2026-07-16)

Problem Types: CWE-407 | CWE-407 CWE-407 Inefficient Algorithmic Complexity

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1ADPDECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Peteroupc Cbor All All All All

References

ReferenceSourceLinkTags
github.com/peteroupc/CBOR/commit/b4117dbbb4cd5a4a963f9d0c9aa132f033e15b95 af854a3a-2127-422b-91ae-364da2661108 github.com Patch
github.com/advisories/GHSA-6r92-cgxc-r5fg af854a3a-2127-422b-91ae-364da2661108 github.com Third Party Advisory
github.com/peteroupc/CBOR/compare/v4.5...v4.5.1 af854a3a-2127-422b-91ae-364da2661108 github.com Release Notes
vulncheck.com/advisories/vc-advisory-GHSA-6r92-cgxc-r5fg af854a3a-2127-422b-91ae-364da2661108 vulncheck.com Third Party Advisory
github.com/peteroupc/CBOR/security/advisories/GHSA-6r92-cgxc-r5fg af854a3a-2127-422b-91ae-364da2661108 github.com Third Party Advisory
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