{"id":"CVE-2023-35784","aliases":["BELL-CVE-2023-35784","EUVD-2023-39781","GHSA-w423-44w8-64mh"],"status":"published","title":"A double free or use after free could occur after SSL_clear in OpenBSD 7.2 before errata 026 and...","description":"A double free or use after free could occur after SSL_clear in OpenBSD 7.2 before errata 026 and 7.3 before errata 004, and in LibreSSL before 3.6.3 and 3.7.x before 3.7.3. NOTE: OpenSSL is not affected.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.0094,"percentile":0.61182,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-415","CWE-416"],"published":"2023-06-16T00:00:00Z","modified":"2026-10-28T10:38:45Z","fixes":[{"ecosystem":"Alpaquita:23","package":"libressl","fixed_in":["3.6.3-r0"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpaquita:23","package":"libressl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.6.1-r0"},{"fixed":"3.6.3-r0"}]}]}],"products":[{"vendor":"openbsd","product":"libressl"},{"vendor":"openbsd","product":"openbsd"}],"references":[{"url":"https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/004_ssl.patch.sig","tags":["x_transferred","Patch","web"]},{"url":"https://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/026_ssl.patch.sig","tags":["x_transferred","Patch","web"]},{"url":"https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.6.3-relnotes.txt","tags":["x_transferred","Release Notes","web"]},{"url":"https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.7.3-relnotes.txt","tags":["x_transferred","Release Notes","web"]},{"url":"https://github.com/libressl/openbsd/commit/e42d8f4b21a8a498e2eabbffe4c7b7d4ef7cec54","tags":["x_transferred","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-35784","tags":["advisory"]},{"url":"https://github.com/libressl/openbsd/commit/1d6680b3682f8caba78c627dee60c76da6e20dd7"},{"url":"https://github.com/libressl/openbsd/commit/96094ca8757b95298f49d65c813f303bd514b27b"},{"url":"https://github.com/advisories/GHSA-w423-44w8-64mh"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2023-35784","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/35xxx/CVE-2023-35784.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-35784","description":"A double free or use after free could occur after SSL_clear in OpenBSD 7.2 before errata 026 and 7.3 before errata 004, and in LibreSSL before 3.6.3 and 3.7.x before 3.7.3. NOTE: OpenSSL is not affected.","status":"published","published":"2023-06-16T00:00:00Z","modified":"2024-12-17T17:05:30.289Z","updated_at":"2026-11-02T14:35:33.462059Z"}],"euvd":[{"id":"EUVD-2023-39781","description":"A double free or use after free could occur after SSL_clear in OpenBSD 7.2 before errata 026 and 7.3 before errata 004, and in LibreSSL before 3.6.3 and 3.7.x before 3.7.3. NOTE: OpenSSL is not affected.","status":"published","published":"2023-06-16T00:00:00Z","modified":"2024-12-17T17:05:30Z","updated_at":"2026-11-03T00:04:34.500778Z"}],"ghsa":[{"id":"GHSA-w423-44w8-64mh","title":"A double free or use after free could occur after SSL_clear in OpenBSD 7.2 before errata 026 and...","description":"A double free or use after free could occur after SSL_clear in OpenBSD 7.2 before errata 026 and 7.3 before errata 004, and in LibreSSL before 3.6.3 and 3.7.x before 3.7.3. NOTE: OpenSSL is not affected.","status":"published","published":"2023-06-16T21:30:27Z","modified":"2023-11-15T05:04:51Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-415"],"updated_at":"2026-11-02T14:55:02.324014Z"}],"nvd":[{"id":"CVE-2023-35784","description":"A double free or use after free could occur after SSL_clear in OpenBSD 7.2 before errata 026 and 7.3 before errata 004, and in LibreSSL before 3.6.3 and 3.7.x before 3.7.3. NOTE: OpenSSL is not affected.","status":"published","published":"2023-06-16T20:15:09.493Z","modified":"2026-06-17T06:05:12.16Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-415","CWE-416"],"updated_at":"2026-11-02T14:08:06.335469Z"}],"osv":[{"id":"BELL-CVE-2023-35784","status":"published","published":"2023-06-16T20:15:00Z","modified":"2026-01-26T09:33:24.855084Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:28:17.742221Z"},{"id":"CVE-2023-35784","description":"A double free or use after free could occur after SSL_clear in OpenBSD 7.2 before errata 026 and 7.3 before errata 004, and in LibreSSL before 3.6.3 and 3.7.x before 3.7.3. NOTE: OpenSSL is not affected.","status":"published","published":"2023-06-16T00:00:00Z","modified":"2026-10-28T10:38:45.873925715Z","updated_at":"2026-11-02T15:44:32.510144Z"}]}}