[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"repo-stars":3,"vuln-UBUNTU-CVE-2023-23931":6},{"stargazers_count":4,"fetched_at":5},8,"2026-09-19T11:35:27.363Z",{"id":7,"descriptions":8,"cisa":9,"weaknesses":10,"exploits":11,"aliases":12,"duplicate_of":9,"upstream":13,"downstream":16,"duplicates":21,"related":22,"reserved_at":9,"published_at":25,"modified_at":26,"state":9,"summary":27,"references_raw":29,"kevs":53,"epss":9,"epss_history":54,"metrics":55,"affected":62},"UBUNTU-CVE-2023-23931","cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. In affected versions `Cipher.update_into` would accept Python objects which implement the buffer protocol, but provide only immutable buffers. This would allow immutable objects (such as `bytes`) to be mutated, thus violating fundamental rules of Python and resulting in corrupted output. This now correctly raises an exception. This issue has been present since `update_into` was originally introduced in cryptography 1.8.",null,[],[],[],[14],{"_key":15},"CVE-2023-23931",[17,19],{"_key":18},"USN-6539-1",{"_key":20},"USN-8776-1",[],[23,24],{"_key":18},{"_key":20},"2023-02-07T21:15:00Z","2026-04-28T16:31:41.700422Z",{"cisa_kev":28,"cisa_ransomware":28,"cisa_vendor":9,"epss_severity":9,"epss_score":9,"severity":9,"severity_score":9,"severity_version":9,"severity_source":9,"severity_vector":9,"severity_status":9},false,[30,36,40,44,49],{"url":31,"sources":32,"tags":34},"https://ubuntu.com/security/CVE-2023-23931",[33],"osv_ubuntu",[35],"REPORT",{"url":37,"sources":38,"tags":39},"https://github.com/pyca/cryptography/security/advisories/GHSA-w7pp-m8wf-vj6r",[33],[35],{"url":41,"sources":42,"tags":43},"https://github.com/pyca/cryptography/pull/8230/commits/94a50a9731f35405f0357fa5f3b177d46a726ab3",[33],[35],{"url":45,"sources":46,"tags":47},"https://ubuntu.com/security/notices/USN-6539-1",[33],[48],"Advisory",{"url":50,"sources":51,"tags":52},"https://www.cve.org/CVERecord?id=CVE-2023-23931",[33],[35],[],[],[56],{"source":33,"cvss_v2_0":9,"cvss_v3_0":9,"cvss_v3_1":57,"cvss_v4_0":9},{"baseScore":58,"baseSeverity":9,"vectorString":59,"impactScore":60,"exploitabilityScore":61},6.5,"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",4.2,10,[63],{"ecosystem":64,"name":65,"vendor":66,"product":65,"cpe_part":9,"purl_type":67,"purl_namespace":66,"purl_name":65,"source":9,"versions":68},"Ubuntu","python-cryptography","ubuntu","deb",[69,73,77],{"version":70,"is_range":71,"range_type":72,"version_start":9,"version_start_type":9,"version_end":9,"version_end_type":9,"fixed_in":9},"all",true,"ecosystem",{"version":74,"is_range":71,"range_type":72,"version_start":9,"version_start_type":9,"version_end":75,"version_end_type":76,"fixed_in":9},"lt2_8_3ubuntu0_2","2.8-3ubuntu0.2","excluding",{"version":78,"is_range":71,"range_type":72,"version_start":9,"version_start_type":9,"version_end":79,"version_end_type":76,"fixed_in":9},"lt3_4_8_1ubuntu2_1","3.4.8-1ubuntu2.1"]