{"schema_version":1,"title":"cbor2 (PyPI) vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 4 vulnerabilities in cbor2 (PyPI): 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-26209, was published on 23 March 2026.","url":"https://junglewise.ai/threats/technologies/cbor2","json_url":"https://junglewise.ai/threats/technologies/cbor2.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/cbor2","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":1,"all_time":4,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":0,"last_365_days":3},"latest":[{"cve":"CVE-2026-26209","cvss":3,"epss":0.0065,"slug":"cve-2026-26209-cbor2-denial-of-service-via-uncontrolled-recursion","title":"PYSEC-2026-2123 - cbor2 provides encoding and decoding for the Concise Binary Object Representation (CBOR) serialization format. Versions prior to 5.9.0 are v","severity":"low","exploited":false,"published_at":"2026-03-23T19:16:39.53+00:00","url":"https://junglewise.ai/threats/cve-2026-26209-cbor2-denial-of-service-via-uncontrolled-recursion"},{"cve":"CVE-2025-68131","cvss":4,"epss":0.0047,"slug":"cve-2025-68131-agronholm-cbor2-information-disclosure-via-decoder-reuse","title":"agronholm cbor2 information disclosure via decoder reuse","severity":"medium","exploited":false,"published_at":"2025-12-31T22:01:38+00:00","url":"https://junglewise.ai/threats/cve-2025-68131-agronholm-cbor2-information-disclosure-via-decoder-reuse"},{"cve":"CVE-2025-64076","cvss":7.5,"epss":0.0046,"slug":"cve-2025-64076-cbor2-c-extension-integer-underflow-and-memory-leak-in-decoder","title":"cbor2 C extension integer underflow and memory leak in decoder","severity":"high","exploited":false,"published_at":"2025-11-18T18:32:55+00:00","url":"https://junglewise.ai/threats/cve-2025-64076-cbor2-c-extension-integer-underflow-and-memory-leak-in-decoder"},{"cve":"CVE-2024-26134","cvss":3.1,"epss":0.0118,"slug":"cve-2024-26134-cbor2-buffer-overflow-in-decoder","title":"PYSEC-2024-155 - cbor2 provides encoding and decoding for the Concise Binary Object Representation (CBOR) (RFC 8949) serialization format. Starting in versio","severity":"low","exploited":false,"published_at":"2024-02-19T23:15:07+00:00","url":"https://junglewise.ai/threats/cve-2024-26134-cbor2-buffer-overflow-in-decoder"}],"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"open-webui (PyPI)","slug":"open-webui","vulnerabilities":156,"url":"https://junglewise.ai/threats/technologies/open-webui"},{"name":"nltk (PyPI)","slug":"nltk","vulnerabilities":74,"url":"https://junglewise.ai/threats/technologies/nltk"},{"name":"picklescan (PyPI)","slug":"picklescan","vulnerabilities":74,"url":"https://junglewise.ai/threats/technologies/picklescan"},{"name":"openbabel (PyPI)","slug":"openbabel","vulnerabilities":48,"url":"https://junglewise.ai/threats/technologies/openbabel"},{"name":"apache-superset (PyPI)","slug":"apache-superset","vulnerabilities":44,"url":"https://junglewise.ai/threats/technologies/apache-superset"},{"name":"apache-airflow (PyPI)","slug":"apache-airflow","vulnerabilities":40,"url":"https://junglewise.ai/threats/technologies/apache-airflow"},{"name":"tensorflow-gpu (PyPI)","slug":"tensorflow-gpu","vulnerabilities":37,"url":"https://junglewise.ai/threats/technologies/tensorflow-gpu"},{"name":"tensorflow-cpu (PyPI)","slug":"tensorflow-cpu","vulnerabilities":34,"url":"https://junglewise.ai/threats/technologies/tensorflow-cpu"},{"name":"weblate (PyPI)","slug":"weblate","vulnerabilities":33,"url":"https://junglewise.ai/threats/technologies/weblate"},{"name":"mcp-atlassian (PyPI)","slug":"mcp-atlassian","vulnerabilities":30,"url":"https://junglewise.ai/threats/technologies/mcp-atlassian"},{"name":"crawl4ai (PyPI)","slug":"crawl4ai","vulnerabilities":28,"url":"https://junglewise.ai/threats/technologies/crawl4ai"},{"name":"moin (PyPI)","slug":"moin","vulnerabilities":28,"url":"https://junglewise.ai/threats/technologies/moin"}],"technology":{"hub":true,"name":"cbor2 (PyPI)","slug":"cbor2","vendor":{"name":"PyPI","slug":"pypi","url":"https://junglewise.ai/threats/vendors/pypi"},"aliases":[],"homepage":"https://pypi.org/project/cbor2/","repo_url":"https://github.com/agronholm/cbor2","description":"A Python library for encoding and decoding Concise Binary Object Representation (CBOR) data.","url":"https://junglewise.ai/threats/technologies/cbor2"},"most_severe":[{"cve":"CVE-2025-64076","cvss":7.5,"epss":0.0046,"slug":"cve-2025-64076-cbor2-c-extension-integer-underflow-and-memory-leak-in-decoder","title":"cbor2 C extension integer underflow and memory leak in decoder","severity":"high","exploited":false,"published_at":"2025-11-18T18:32:55+00:00","url":"https://junglewise.ai/threats/cve-2025-64076-cbor2-c-extension-integer-underflow-and-memory-leak-in-decoder"},{"cve":"CVE-2025-68131","cvss":4,"epss":0.0047,"slug":"cve-2025-68131-agronholm-cbor2-information-disclosure-via-decoder-reuse","title":"agronholm cbor2 information disclosure via decoder reuse","severity":"medium","exploited":false,"published_at":"2025-12-31T22:01:38+00:00","url":"https://junglewise.ai/threats/cve-2025-68131-agronholm-cbor2-information-disclosure-via-decoder-reuse"},{"cve":"CVE-2024-26134","cvss":3.1,"epss":0.0118,"slug":"cve-2024-26134-cbor2-buffer-overflow-in-decoder","title":"PYSEC-2024-155 - cbor2 provides encoding and decoding for the Concise Binary Object Representation (CBOR) (RFC 8949) serialization format. Starting in versio","severity":"low","exploited":false,"published_at":"2024-02-19T23:15:07+00:00","url":"https://junglewise.ai/threats/cve-2024-26134-cbor2-buffer-overflow-in-decoder"},{"cve":"CVE-2026-26209","cvss":3,"epss":0.0065,"slug":"cve-2026-26209-cbor2-denial-of-service-via-uncontrolled-recursion","title":"PYSEC-2026-2123 - cbor2 provides encoding and decoding for the Concise Binary Object Representation (CBOR) serialization format. Versions prior to 5.9.0 are v","severity":"low","exploited":false,"published_at":"2026-03-23T19:16:39.53+00:00","url":"https://junglewise.ai/threats/cve-2026-26209-cbor2-denial-of-service-via-uncontrolled-recursion"}],"generated_at":"2026-09-26T13:07:00.120236+00:00"}