{"cve":"CVE-2024-26134","nvd":{"published":"2024-02-19T23:15:07.810","modified":"2026-06-17T07:17:10.310","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-120"],"references":["https://github.com/agronholm/cbor2/commit/387755eacf0be35591a478d3c67fe10618a6d542","https://github.com/agronholm/cbor2/commit/4de6991ba29bf2290d7b9d83525eda7d021873df","https://github.com/agronholm/cbor2/pull/204","https://github.com/agronholm/cbor2/releases/tag/5.6.2","https://github.com/agronholm/cbor2/security/advisories/GHSA-375g-39jq-vq7m"],"products":["agronholm:cbor2","fedoraproject:fedora"],"source":"nvd","synced_at":"2026-10-19T21:45:59.823092188+00:00"},"epss":{"cve":"CVE-2024-26134","score":0.01177,"percentile":0.67603,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-375g-39jq-vq7m","url":"https://osv.dev/vulnerability/GHSA-375g-39jq-vq7m","summary":"Potential buffer overflow in CBOR2 decoder","modified":"2026-06-10T17:14:17.011929402Z","packages":[{"ecosystem":"PyPI","name":"cbor2","purl":"pkg:pypi/cbor2","ranges":[">=5.5.1 <5.6.2"],"fixed":["5.6.2"]}]},{"id":"PYSEC-2024-155","url":"https://osv.dev/vulnerability/PYSEC-2024-155","summary":"","modified":"2026-06-10T17:14:17.453532103Z","packages":[{"ecosystem":"PyPI","name":"cbor2","purl":"pkg:pypi/cbor2","ranges":[">=5.5.1 <5.6.2"],"fixed":["5.6.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}