CVE-2024-26134

CBOR2 decoder has potential buffer overflow

Published Feb 19, 2024 CVSS 3.1 · 7.5 High EPSS 1.2% KEV · Not listed
Description
cbor2 provides encoding and decoding for the Concise Binary Object Representation (CBOR) (RFC 8949) serialization format. Starting in version 5.5.1 and prior to version 5.6.2, an attacker can crash a service using cbor2 to parse a CBOR binary by sending a long enough object. Version 5.6.2 contains a patch for this issue.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2024-0204 cbor2 provides encoding and decoding for the Concise Binary Object Representation (CBOR) (RFC 8949) serialization format. Starting in version 5.5.1 and prior to version 5.6.2, an attacker can crash a service using cbor2 to parse a CBOR binary by sending a long enough object. Version 5.6.2 contains a patch for this issue.
Github GHSA Github GHSA GHSA-375g-39jq-vq7m Potential buffer overflow in CBOR2 decoder
History
Type Values Removed Values Added
CPEs cpe:2.3:a:agronholm:cbor2:5.5.1:*:*:*:*:*:*:*
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Agronholm
Agronholm cbor2
Fedoraproject
Fedoraproject fedora
CPEs cpe:2.3:a:agronholm:cbor2:*:*:*:*:*:python:*:*
cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:40:*:*:*:*:*:*:*
Vendors & Products Agronholm
Agronholm cbor2
Fedoraproject
Fedoraproject fedora
Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Feb 13, 2025, 5:41 PM
Reserved
Feb 14, 2024, 5:40 PM
Status
Analyzed
Published
Feb 19, 2024, 11:15 PM
Modified
Jun 17, 2026, 7:17 AM