{"id":"CVE-2021-39132","aliases":["EUVD-2021-2099","GHSA-q4rf-3fhx-88pf"],"status":"published","title":"YAML deserialization can run untrusted code","description":"Rundeck is an open source automation service with a web console, command line tools and a WebAPI. Prior to version 3.3.14 and version 3.4.3, an authorized user can upload a zip-format plugin with a crafted plugin.yaml, or a crafted aclpolicy yaml file, or upload an untrusted project archive with a crafted aclpolicy yaml file, that can cause the server to run untrusted code on Rundeck Community or Enterprise Edition. An authenticated user can make a POST request, that can cause the server to run untrusted code on Rundeck Enterprise Edition. The zip-format plugin issues requires authentication and authorization to these access levels, and affects all Rundeck editions:`admin` level access to the `system` resource type. The ACL Policy yaml file upload issues requires authentication and authorization to these access levels, and affects all Rundeck editions: `create` `update` or `admin` level access to a `project_acl` resource, and/or`create` `update` or `admin` level access to the `system_acl` resource. The unauthorized POST request requires authentication, but no specific authorization, and affects Rundeck Enterprise only. Patches are available in versions 3.4.3, 3.3.14","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01688,"percentile":0.77369,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-502"],"published":"2021-08-30T19:35:10Z","modified":"2026-10-20T10:54:52Z","fixes":[{"ecosystem":"Maven","package":"org.rundeck:rundeck-core","fixed_in":["3.4.3","3.3.14"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.rundeck:rundeck-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.4.0"},{"fixed":"3.4.3"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.rundeck:rundeck-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.3.14"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.rundeck:rundeck-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.4.0"},{"fixed":"3.4.3"}]}],"versions":["3.4.0-20210614","3.4.1-20210614","3.4.1-20210715","3.4.1-rc1-20210629","3.4.1-rc2-20210705","3.4.1-rc3-20210709","3.4.2-20210803","3.4.2-rc1-20210726","3.4.2-rc2-20210729","3.4.3-rc1-20210813","3.4.3-rc2-20210816"]},{"source":"osv","ecosystem":"Maven","package":"org.rundeck:rundeck-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.3.14"}]}],"versions":["1.4.4","1.4.5","1.5","1.5.1","1.5.2","1.5.3","1.6.0","1.6.1","1.6.2","2.0.0","2.0.1","2.0.2","2.0.3","2.0.4","2.1.0","2.1.1","2.1.2","2.1.3","2.10.0","2.10.1","2.10.2","2.10.3","2.10.4","2.10.5","2.10.6","2.10.7","2.10.8","2.11.0","2.11.0-RC1","2.11.1","2.11.10","2.11.11","2.11.12","2.11.13","2.11.14","2.11.2","2.11.3","2.11.4","2.11.5","2.11.6","2.11.7","2.11.8","2.11.9","2.2.0","2.2.1","2.2.2","2.2.3","2.3.0","2.3.1","2.3.2","2.4.0","2.4.1","2.4.2","2.5.0","2.5.1","2.5.2","2.5.3","2.6.0","2.6.1","2.6.10","2.6.11","2.6.2","2.6.3","2.6.4","2.6.5","2.6.6","2.6.7","2.6.8","2.6.9","2.7.0","2.7.1","2.7.2","2.7.3","2.8.0","2.8.1","2.8.2","2.8.3","2.8.4","2.9.0","2.9.1","2.9.2","2.9.3","2.9.4","3.0.0-20180727","3.0.0-alpha1","3.0.1-20180803","3.0.10-20181220","3.0.11-20181221","3.0.12-20190114","3.0.13-20190123","3.0.14-20190221","3.0.15-20190222","3.0.16-20190223","3.0.17-20190311","3.0.18-20190322","3.0.19-20190327","3.0.2-20180803","3.0.2-20180817","3.0.20-20190408","3.0.21-20190424","3.0.22-20190512","3.0.23-20190619","3.0.24-20190719","3.0.25-20190814","3.0.26-20190829","3.0.27-20191204","3.0.5-20180828","3.0.6-20180917","3.0.7-20181008","3.0.8-20181029","3.0.9-20181127","3.1.0-20190731","3.1.0-rc2-20190719","3.1.1-20190923","3.1.2-20190927","3.1.3-20191204","3.2.0-20191218","3.2.1-20200113","3.2.2-20200204","3.2.3-20200221","3.2.4-20200318","3.2.5-20200403","3.2.6-20200427","3.2.7-20200515","3.2.7-rc1-20200511","3.2.9-20200708","3.3.0-20200701","3.3.0-preview1-20200608","3.3.0-preview2-20200610","3.3.0-rc1-20200623","3.3.1-20200727","3.3.10-20210301","3.3.10-rc1-20210216","3.3.10-rc2-20210219","3.3.11-20210507","3.3.11-rc1-20210329","3.3.11-rc2-20210406","3.3.11-rc3-20210424","3.3.11-rc4-20210504","3.3.12-20210521","3.3.12-rc1-20210513","3.3.12-rc2-20210514","3.3.13-20210614","3.3.13-rc1-20210601","3.3.13-rc2-20210610","3.3.14-rc1-20210825","3.3.2-20200727","3.3.2-20200817","3.3.2-rc1-20200811","3.3.2-rc2-20200814","3.3.3-20200910","3.3.3-rc1-20200902","3.3.3-rc2-20200904","3.3.4-20201007","3.3.4-rc1-20200921","3.3.4-rc2-20200923","3.3.4-rc3-20200925","3.3.4-rc4-20200929","3.3.5-20201019","3.3.5-rc1-20201009","3.3.5-rc2-20201014","3.3.6-20201111","3.3.6-alpha1-20201022","3.3.6-rc1-20201102","3.3.6-rc2-20201105","3.3.6-rc3-20201105","3.3.6-rc4-20201109","3.3.7-20201208","3.3.7-rc1-20201201","3.3.7-rc2-20201203","3.3.8-20210111","3.3.8-rc3-20201231","3.3.8-rc4-20201231","3.3.8-rc5-20210104","3.3.8-rc6-20210105","3.3.8-rc7-20210107","3.3.9-20210122","3.3.9-20210201","3.3.9-rc2-20210122","3.3.9-rc3-20210127","3.3.9-rc4-20210201"]}],"products":[{"vendor":"pagerduty","product":"rundeck"},{"vendor":"rundeck","product":"rundeck"}],"references":[{"url":"https://github.com/rundeck/rundeck/security/advisories/GHSA-q4rf-3fhx-88pf","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/rundeck/rundeck/commit/850d12e21d22833bc148b7f458d7cb5949f829b6","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-39132","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-q4rf-3fhx-88pf"},{"url":"https://github.com/rundeck/rundeck","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-39132","title":"YAML deserialization can run untrusted code","description":"Rundeck is an open source automation service with a web console, command line tools and a WebAPI. Prior to version 3.3.14 and version 3.4.3, an authorized user can upload a zip-format plugin with a crafted plugin.yaml, or a crafted aclpolicy yaml file, or upload an untrusted project archive with a crafted aclpolicy yaml file, that can cause the server to run untrusted code on Rundeck Community or Enterprise Edition. An authenticated user can make a POST request, that can cause the server to run untrusted code on Rundeck Enterprise Edition. The zip-format plugin issues requires authentication and authorization to these access levels, and affects all Rundeck editions:`admin` level access to the `system` resource type. The ACL Policy yaml file upload issues requires authentication and authorization to these access levels, and affects all Rundeck editions: `create` `update` or `admin` level access to a `project_acl` resource, and/or`create` `update` or `admin` level access to the `system_acl` resource. The unauthorized POST request requires authentication, but no specific authorization, and affects Rundeck Enterprise only. Patches are available in versions 3.4.3, 3.3.14","status":"published","published":"2021-08-30T19:35:10Z","modified":"2024-08-04T01:58:17.769Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:33:09.540052Z"}],"euvd":[{"id":"EUVD-2021-2099","description":"Rundeck is an open source automation service with a web console, command line tools and a WebAPI. Prior to version 3.3.14 and version 3.4.3, an authorized user can upload a zip-format plugin with a crafted plugin.yaml, or a crafted aclpolicy yaml file, or upload an untrusted project archive with a crafted aclpolicy yaml file, that can cause the server to run untrusted code on Rundeck Community or Enterprise Edition. An authenticated user can make a POST request, that can cause the server to run untrusted code on Rundeck Enterprise Edition. The zip-format plugin issues requires authentication and authorization to these access levels, and affects all Rundeck editions:`admin` level access to the `system` resource type. The ACL Policy yaml file upload issues requires authentication and authorization to these access levels, and affects all Rundeck editions: `create` `update` or `admin` level access to a `project_acl` resource, and/or`create` `update` or `admin` level access to the `system_acl` resource. The unauthorized POST request requires authentication, but no specific authorization, and affects Rundeck Enterprise only. Patches are available in versions 3.4.3, 3.3.14","status":"published","published":"2021-08-30T19:35:10Z","modified":"2024-08-04T01:58:17Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T03:24:24.305495Z"}],"ghsa":[{"id":"GHSA-q4rf-3fhx-88pf","title":"YAML deserialization can run untrusted code","description":"### Impact\n\nAn authorized user can upload a zip-format plugin with a crafted plugin.yaml, or a crafted aclpolicy yaml file, or upload an untrusted project archive with a crafted aclpolicy yaml file, that can cause the server to run untrusted code on Rundeck Community or Enterprise Edition.  An authenticated user can make a POST request, that can cause the server to run untrusted code on Rundeck Enterprise Edition.\n\nThe zip-format plugin issues requires authentication and authorization to these access levels, and affects all Rundeck editions:\n\n* `admin` level access to the `system` resource type\n\nThe ACL Policy yaml file upload issues requires authentication and authorization to these access levels, and affects all Rundeck editions: \n\n* `create` `update` or `admin` level access to a `project_acl` resource\n* `create` `update` or `admin` level access to the `system_acl` resource\n\nThe unauthorized POST request requires authentication, but no specific authorization, and affects Rundeck Enterprise only.\n\n### Patches\nVersions 3.4.3, 3.3.14\n\n### Workarounds\n\nPlease visit [https://rundeck.com/security](https://rundeck.com/security) for information about specific workarounds.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at [security@rundeck.com](mailto:security@rundeck.com)\n\nTo report security issues to Rundeck please use the form at [https://rundeck.com/security](https://rundeck.com/security)\n\nReporter: Rojan Rijal from Tinder Red Team","status":"published","published":"2021-09-01T18:27:01Z","modified":"2023-02-01T05:06:05Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:36:36.66596Z"}],"nvd":[{"id":"CVE-2021-39132","description":"Rundeck is an open source automation service with a web console, command line tools and a WebAPI. Prior to version 3.3.14 and version 3.4.3, an authorized user can upload a zip-format plugin with a crafted plugin.yaml, or a crafted aclpolicy yaml file, or upload an untrusted project archive with a crafted aclpolicy yaml file, that can cause the server to run untrusted code on Rundeck Community or Enterprise Edition. An authenticated user can make a POST request, that can cause the server to run untrusted code on Rundeck Enterprise Edition. The zip-format plugin issues requires authentication and authorization to these access levels, and affects all Rundeck editions:`admin` level access to the `system` resource type. The ACL Policy yaml file upload issues requires authentication and authorization to these access levels, and affects all Rundeck editions: `create` `update` or `admin` level access to a `project_acl` resource, and/or`create` `update` or `admin` level access to the `system_acl` resource. The unauthorized POST request requires authentication, but no specific authorization, and affects Rundeck Enterprise only. Patches are available in versions 3.4.3, 3.3.14","status":"published","published":"2021-08-30T20:15:07.66Z","modified":"2026-06-17T04:03:07.777Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:06:57.67549Z"}],"osv":[{"id":"CVE-2021-39132","description":"Rundeck is an open source automation service with a web console, command line tools and a WebAPI. Prior to version 3.3.14 and version 3.4.3, an authorized user can upload a zip-format plugin with a crafted plugin.yaml, or a crafted aclpolicy yaml file, or upload an untrusted project archive with a crafted aclpolicy yaml file, that can cause the server to run untrusted code on Rundeck Community or Enterprise Edition. An authenticated user can make a POST request, that can cause the server to run untrusted code on Rundeck Enterprise Edition. The zip-format plugin issues requires authentication and authorization to these access levels, and affects all Rundeck editions:`admin` level access to the `system` resource type. The ACL Policy yaml file upload issues requires authentication and authorization to these access levels, and affects all Rundeck editions: `create` `update` or `admin` level access to a `project_acl` resource, and/or`create` `update` or `admin` level access to the `system_acl` resource. The unauthorized POST request requires authentication, but no specific authorization, and affects Rundeck Enterprise only. Patches are available in versions 3.4.3, 3.3.14","status":"published","published":"2021-08-30T20:15:07.66Z","modified":"2026-10-20T10:54:52.743507292Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:20.843843Z"},{"id":"GHSA-q4rf-3fhx-88pf","title":"YAML deserialization can run untrusted code","description":"### Impact\n\nAn authorized user can upload a zip-format plugin with a crafted plugin.yaml, or a crafted aclpolicy yaml file, or upload an untrusted project archive with a crafted aclpolicy yaml file, that can cause the server to run untrusted code on Rundeck Community or Enterprise Edition.  An authenticated user can make a POST request, that can cause the server to run untrusted code on Rundeck Enterprise Edition.\n\nThe zip-format plugin issues requires authentication and authorization to these access levels, and affects all Rundeck editions:\n\n* `admin` level access to the `system` resource type\n\nThe ACL Policy yaml file upload issues requires authentication and authorization to these access levels, and affects all Rundeck editions: \n\n* `create` `update` or `admin` level access to a `project_acl` resource\n* `create` `update` or `admin` level access to the `system_acl` resource\n\nThe unauthorized POST request requires authentication, but no specific authorization, and affects Rundeck Enterprise only.\n\n### Patches\nVersions 3.4.3, 3.3.14\n\n### Workarounds\n\nPlease visit [https://rundeck.com/security](https://rundeck.com/security) for information about specific workarounds.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at [security@rundeck.com](mailto:security@rundeck.com)\n\nTo report security issues to Rundeck please use the form at [https://rundeck.com/security](https://rundeck.com/security)\n\nReporter: Rojan Rijal from Tinder Red Team","status":"published","published":"2021-09-01T18:27:01Z","modified":"2026-07-08T06:27:28.787153892Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T15:46:54.055966Z"}]}}