{"id":"JLSEC-2026-518","details":"GnuTLS 3.6.x before 3.6.14 uses incorrect cryptography for encrypting a session ticket (a loss of confidentiality in TLS 1.2, and an authentication bypass in TLS 1.3). The earliest affected version is 3.6.4 (2018-09-24) because of an error in a 2018-09-18 commit. Until the first key rotation, the TLS server always uses wrong data in place of an encryption key derived from an application.","modified":"2026-07-18T00:00:50.376500103Z","published":"2026-05-26T14:17:50.003Z","upstream":["CVE-2020-13777"],"database_specific":{"license":"CC-BY-4.0","sources":[{"published":"2020-06-04T07:15:10Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2020-13777","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2020-13777","database_specific":{"status":"Modified"},"id":"CVE-2020-13777","imported":"2026-07-17T22:03:29.015Z","modified":"2026-06-17T02:53:38.507Z"}]},"references":[{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00015.html"},{"type":"WEB","url":"https://gnutls.org/security-new.html#GNUTLS-SA-2020-06-03"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6C4DHUKV6M6SJ5CV6KVHZNHNF7HCUE5P/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6RTXZOXC4MHTFE2HKY6IAZMF2WHD2WMV/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RRQBFK3UZ7SV76IYDTS4PS6ABS2DSJHK/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VMB3UGI5H5RCFRU6OGRPMNUCNLJGEN7Y/"},{"type":"WEB","url":"https://security.gentoo.org/glsa/202006-01"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20200619-0004/"},{"type":"WEB","url":"https://usn.ubuntu.com/4384-1/"},{"type":"WEB","url":"https://www.debian.org/security/2020/dsa-4697"}],"affected":[{"package":{"name":"GnuTLS_jll","ecosystem":"Julia","purl":"pkg:julia/GnuTLS_jll?uuid=0951126a-58fd-58f1-b5b3-b08c7c4a876d"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.7.1+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-518.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V2","score":"AV:N/AC:M/Au:N/C:P/I:P/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"}]}