{"id":"CVE-2021-31819","details":"In Halibut versions prior to 4.4.7 there is a deserialisation vulnerability that could allow remote code execution on systems that already trust each other based on certificate verification.","aliases":["GHSA-hpf7-4c2g-9chf"],"modified":"2026-07-09T01:25:27.093514Z","published":"2021-09-22T02:15:09.593Z","references":[{"type":"ADVISORY","url":"https://advisories.octopus.com/adv/2021-08---Remote-Code-Execution-via-Deserialisation-in-the-Halibut-Protocol-%28CVE-2021-31819%29.2250309681.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/octopusdeploy/halibut","events":[{"introduced":"0"},{"fixed":"b325aeb4cce5a9ff0b663c67ccabb3bd5d04cb34"}],"database_specific":{"cpe":"cpe:2.3:a:octopus:halibut:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"4.4.7"}],"source":"CPE_RANGE"}}],"versions":["4.4.6","4.4.5","4.4.4","4.4.3","4.4.2","4.4.1","4.4.0","4.3.34","4.3.33","4.3.32","4.3.31","4.3.30-ci0009","4.3.30-ci0007","4.3.30-ci0005","4.3.30-ci0003","4.3.28-ci0001","4.3.28","4.3.30-ci0001","4.3.29-ci0002","4.3.29","4.3.29-ci0001","4.3.27-ci0003","4.3.27","4.3.27-ci0002","4.3.27-ci0001","4.3.26-ci0002","4.3.26","4.3.26-ci0001","4.3.25","4.3.24","4.3.23","4.3.22","4.3.21","4.3.19","4.3.18","4.3.17","4.3.16","4.3.15","4.3.14","4.3.13","4.3.12","4.3.8","4.3.7","4.3.6","4.3.5","4.3.3","4.3.4","4.3.2","4.3.0","4.2.11","4.3.1","4.2.9","4.2.8","4.2.7","4.2.4","4.2.3","4.2.2","4.2.1","4.2.0","4.1.0","4.0.9","4.0.8","4.0.7","4.0.6","4.0.5","4.0.4","4.0.3","4.0.2","4.0.1","4.0.0","3.0.4","3.0.2","3.0.0","2.6.19","2.6.15","2.6.14","2.6.13","2.6.12","2.6.8","2.6.6","2.6.4","2.6.3","2.6.2","2.6.1","2.6.0","2.5.2","2.5.1","2.5.0","2.4.19","2.4.18","2.4.17","2.4.15","2.4.14","2.4.13","2.4.12","2.4.11","2.4.10","2.4.9","2.4.8","2.4.4","2.4.3","2.4.2","2.4.1","2.4.0","2.3.0","2.2.1","2.2.0.55"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-31819.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}