{"id":"CVE-2018-1000210","aliases":["EUVD-2018-0686","GHSA-rpch-cqj9-h65r"],"status":"published","title":"High severity vulnerability that affects YamlDotNet and YamlDotNet.Signed","description":"YamlDotNet version 4.3.2 and earlier contains a Insecure Direct Object Reference vulnerability in The default behavior of Deserializer.Deserialize() will deserialize user-controlled types in the line \"currentType = Type.GetType(nodeEvent.Tag.Substring(1), throwOnError: false);\" and blindly instantiates them. that can result in Code execution in the context of the running process. This attack appear to be exploitable via Victim must parse a specially-crafted YAML file. This vulnerability appears to have been fixed in 5.0.0.","severity":{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01469,"percentile":0.73925,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-502","CWE-639"],"published":"2018-07-13T18:00:00Z","modified":"2026-10-20T10:49:38Z","fixes":[{"ecosystem":"NuGet","package":"YamlDotNet","fixed_in":["5.0.0"],"sources":["ghsa","osv"]},{"ecosystem":"NuGet","package":"YamlDotNet.Signed","fixed_in":["5.0.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"NuGet","package":"YamlDotNet","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"4.3.2"},{"fixed":"5.0.0"}]}]},{"source":"ghsa","ecosystem":"NuGet","package":"YamlDotNet.Signed","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"4.3.2"},{"fixed":"5.0.0"}]}]},{"source":"osv","ecosystem":"NuGet","package":"YamlDotNet","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.0.0"}]}],"versions":["2.3.0-rc","3.0.0","3.1.0","3.1.1","3.2.0","3.2.1","3.2.2","3.3.0","3.3.1","3.4.0","3.5.0","3.5.1","3.6.0","3.6.1","3.7.0","3.7.0-pre129","3.8.0","3.8.0-pre138","3.8.0-pre143","3.8.0-pre145","3.8.0-pre146","3.8.0-pre147","3.8.0-pre148","3.8.0-pre155","3.8.0-pre156","3.8.0-pre158","3.8.0-pre159","3.8.0-pre161","3.8.0-pre162","3.8.0-pre167","3.8.0-pre169","3.8.0-pre170","3.8.0-pre171","3.8.0-pre175","3.8.0-pre178","3.8.0-pre184","3.8.0-pre185","3.8.0-pre186","3.8.0-pre187","3.8.0-pre188","3.8.0-pre189","3.8.0-pre190","3.8.0-pre191","3.8.0-pre193","3.8.0-pre194","3.8.0-pre195","3.8.0-pre196","3.8.0-pre197","3.8.0-pre198","3.8.0-pre199","3.8.0-pre200","3.8.0-pre201","3.8.0-pre203","3.8.0-pre206","3.8.0-pre209","3.8.0-pre210","3.8.0-pre211","3.8.0-pre214","3.8.0-pre221","3.8.0-pre222","3.8.0-pre223","3.8.0-pre232","3.8.0-pre233","3.9.0","3.9.0-pre239","3.9.0-pre240","3.9.0-pre241","3.9.0-pre243","3.9.0-pre245","3.9.0-pre249","3.9.0-pre252","3.9.0-pre254","3.9.0-pre259","3.9.0-pre262","3.9.0-pre263","3.9.0-pre265","3.9.0-pre268","3.9.0-pre269","3.9.0-pre270","3.9.0-pre271","3.9.0-pre273","3.9.0-pre276","3.9.1-pre274","3.9.1-pre275","3.9.1-pre277","3.9.1-pre279","4.0.0","4.0.0-pre272","4.0.1-pre281","4.0.1-pre284","4.0.1-pre285","4.0.1-pre287","4.0.1-pre288","4.0.1-pre291","4.0.1-pre292","4.0.1-pre297","4.0.1-pre298","4.0.1-pre305","4.0.1-pre306","4.0.1-pre307","4.0.1-pre308","4.0.1-pre309","4.0.1-pre318","4.0.1-pre319","4.0.1-pre322","4.0.1-pre323","4.1.0","4.1.1-cake-build0352","4.1.1-netstandard0377","4.1.1-netstandard0378","4.1.1-netstandard0381","4.1.1-netstandard0382","4.1.1-netstandard0383","4.1.1-netstandard0384","4.1.1-netstandard0385","4.1.1-netstandard0386","4.1.1-netstandard0387","4.1.1-netstandard0388","4.1.1-netstandard0389","4.1.1-netstandard0390","4.1.1-netstandard0391","4.1.1-netstandard0392","4.1.1-netstandard0395","4.1.1-netstandard0398","4.1.1-netstandard0405","4.1.1-netstandard0407","4.1.1-pre0354","4.1.1-pre0355","4.1.1-pre0356","4.1.1-pre0357","4.1.1-pre324","4.1.1-pre325","4.2.0","4.2.1","4.2.1-issue-2600412","4.2.2","4.2.2-fix-build0447","4.2.2-fix-build0448","4.2.2-net200423","4.2.2-pre0424","4.2.2-pre0425","4.2.3","4.2.3-pre0452","4.2.3-pre0454","4.2.3-vCipher-master0456","4.2.4","4.2.4-cleanup-solution0459","4.2.4-cleanup-solution0460","4.2.4-cleanup-solution0461","4.2.5-pre0464","4.3.0","4.3.1","4.3.1-pre0469","4.3.2","4.3.2-issue-3140480","4.3.2-issue-3140481","4.3.2-pre0473","4.3.2-pre0476","4.3.2-pre0478","4.3.2-pre0479","4.3.2-pre0482","4.3.2-pre0483","4.3.2-pre0485","4.3.2-pre0486","4.3.3-pre0489"]},{"source":"osv","ecosystem":"NuGet","package":"YamlDotNet.Signed","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.0.0"}]}],"versions":["3.3.1","3.4.0","3.5.0","3.5.1","3.6.0","3.6.1","3.7.0","3.7.0-pre129","3.8.0","3.8.0-pre143","3.8.0-pre145","3.8.0-pre146","3.8.0-pre147","3.8.0-pre148","3.8.0-pre155","3.8.0-pre156","3.8.0-pre158","3.8.0-pre159","3.8.0-pre161","3.8.0-pre162","3.8.0-pre167","3.8.0-pre169","3.8.0-pre170","3.8.0-pre171","3.8.0-pre175","3.8.0-pre178","3.8.0-pre184","3.8.0-pre185","3.8.0-pre186","3.8.0-pre187","3.8.0-pre188","3.8.0-pre189","3.8.0-pre190","3.8.0-pre191","3.8.0-pre193","3.8.0-pre194","3.8.0-pre195","3.8.0-pre196","3.8.0-pre197","3.8.0-pre198","3.8.0-pre199","3.8.0-pre200","3.8.0-pre201","3.8.0-pre203","3.8.0-pre206","3.8.0-pre209","3.8.0-pre210","3.8.0-pre211","3.8.0-pre214","3.8.0-pre221","3.8.0-pre222","3.8.0-pre223","3.8.0-pre232","3.8.0-pre233","3.9.0","3.9.0-pre239","3.9.0-pre240","3.9.0-pre241","3.9.0-pre243","3.9.0-pre245","3.9.0-pre249","3.9.0-pre252","3.9.0-pre254","3.9.0-pre259","3.9.0-pre262","3.9.0-pre263","3.9.0-pre265","3.9.0-pre268","3.9.0-pre269","3.9.0-pre270","3.9.0-pre271","3.9.0-pre273","3.9.0-pre276","3.9.1-pre274","3.9.1-pre275","3.9.1-pre277","3.9.1-pre279","4.0.0","4.0.0-pre272","4.0.1-pre281","4.0.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Party Advisory","advisory","web"]},{"url":"https://github.com/aaubry/YamlDotNet/blob/f96b7cc40a0498f8bafdeb49df3aa23aa2c60993/YamlDotNet/Serialization/NodeTypeResolvers/TypeNameInTagNodeTypeResolver.cs#L35","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-1000210","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-rpch-cqj9-h65r","tags":["advisory"]},{"url":"ps://github.com/aaubry/YamlDotNet","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2018-1000210","description":"YamlDotNet version 4.3.2 and earlier contains a Insecure Direct Object Reference vulnerability in The default behavior of Deserializer.Deserialize() will deserialize user-controlled types in the line \"currentType = Type.GetType(nodeEvent.Tag.Substring(1), throwOnError: false);\" and blindly instantiates them. that can result in Code execution in the context of the running process. This attack appear to be exploitable via Victim must parse a specially-crafted YAML file. This vulnerability appears to have been fixed in 5.0.0.","status":"published","published":"2018-07-13T18:00:00Z","modified":"2024-09-16T19:46:15.219Z","updated_at":"2026-11-02T14:35:10.685174Z"}],"euvd":[{"id":"EUVD-2018-0686","description":"YamlDotNet version 4.3.2 and earlier contains a Insecure Direct Object Reference vulnerability in The default behavior of Deserializer.Deserialize() will deserialize user-controlled types in the line \"currentType = Type.GetType(nodeEvent.Tag.Substring(1), throwOnError: false);\" and blindly instantiates them. that can result in Code execution in the context of the running process. This attack appear to be exploitable via Victim must parse a specially-crafted YAML file. This vulnerability appears to have been fixed in 5.0.0.","status":"published","published":"2018-07-13T18:00:00Z","modified":"2024-09-16T19:46:15Z","updated_at":"2026-11-03T00:55:20.039201Z"}],"ghsa":[{"id":"GHSA-rpch-cqj9-h65r","title":"High severity vulnerability that affects YamlDotNet and YamlDotNet.Signed","description":"YamlDotNet version 4.3.2 and earlier contains a Insecure Direct Object Reference vulnerability in The default behavior of Deserializer.Deserialize() will deserialize user-controlled types in the line \"currentType = Type.GetType(nodeEvent.Tag.Substring(1), throwOnError: false);\" and blindly instantiates them. that can result in Code execution in the context of the running process. This attack appear to be exploitable via Victim must parse a specially-crafted YAML file. This vulnerability appears to have been fixed in 5.0.0.","status":"published","published":"2018-10-16T17:01:10Z","modified":"2023-01-09T05:03:25Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-502","CWE-639"],"updated_at":"2026-11-02T14:36:05.071174Z"}],"nvd":[{"id":"CVE-2018-1000210","description":"YamlDotNet version 4.3.2 and earlier contains a Insecure Direct Object Reference vulnerability in The default behavior of Deserializer.Deserialize() will deserialize user-controlled types in the line \"currentType = Type.GetType(nodeEvent.Tag.Substring(1), throwOnError: false);\" and blindly instantiates them. that can result in Code execution in the context of the running process. This attack appear to be exploitable via Victim must parse a specially-crafted YAML file. This vulnerability appears to have been fixed in 5.0.0.","status":"published","published":"2018-07-13T18:29:00.397Z","modified":"2026-06-17T01:32:41.483Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-502","CWE-639"],"updated_at":"2026-11-02T14:04:32.929986Z"}],"osv":[{"id":"CVE-2018-1000210","description":"YamlDotNet version 4.3.2 and earlier contains a Insecure Direct Object Reference vulnerability in The default behavior of Deserializer.Deserialize() will deserialize user-controlled types in the line \"currentType = Type.GetType(nodeEvent.Tag.Substring(1), throwOnError: false);\" and blindly instantiates them. that can result in Code execution in the context of the running process. This attack appear to be exploitable via Victim must parse a specially-crafted YAML file. This vulnerability appears to have been fixed in 5.0.0.","status":"published","published":"2018-07-13T18:29:00.397Z","modified":"2026-10-20T10:49:38.558344124Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:07.192756Z"},{"id":"GHSA-rpch-cqj9-h65r","title":"High severity vulnerability that affects YamlDotNet and YamlDotNet.Signed","description":"YamlDotNet version 4.3.2 and earlier contains a Insecure Direct Object Reference vulnerability in The default behavior of Deserializer.Deserialize() will deserialize user-controlled types in the line \"currentType = Type.GetType(nodeEvent.Tag.Substring(1), throwOnError: false);\" and blindly instantiates them. that can result in Code execution in the context of the running process. This attack appear to be exploitable via Victim must parse a specially-crafted YAML file. This vulnerability appears to have been fixed in 5.0.0.","status":"published","published":"2018-10-16T17:01:10Z","modified":"2023-11-08T03:59:37.602008Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-502","CWE-639"],"updated_at":"2026-11-02T15:46:56.281047Z"}]}}