{"id":"CVE-2022-39256","aliases":["EUVD-2022-6820","GHSA-gfhp-jgp6-838j"],"status":"published","title":"Orckestra C1 CMS's deserialization of untrusted data allows for arbitrary code execution.","description":"Orckestra C1 CMS is a .NET based Web Content Management System. A vulnerability in versions prior to 6.13 allows remote attackers to execute arbitrary code on affected installations of Orckestra C1 CMS. Authentication is required to exploit this vulnerability. The authenticated user may perform the actions unknowingly by visiting a specially crafted site. This issue is patched in C1 CMS v6.13. There are no known workarounds.","severity":{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01663,"percentile":0.76878,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-502"],"published":"2022-09-27T15:00:15Z","modified":"2026-10-28T02:31:13Z","fixes":[{"ecosystem":"NuGet","package":"CompositeC1.Core","fixed_in":["6.13"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"NuGet","package":"CompositeC1.Core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.13"}]}]},{"source":"osv","ecosystem":"NuGet","package":"CompositeC1.Core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.13"}]}],"versions":["4.2.0","4.2.1","4.3.0","4.3.0-beta1","5.0.0","5.1.0","5.2.0","5.3.0","5.4.0","5.5.0","6.0.0","6.1.0","6.10.0","6.11.0","6.12.0","6.2.0","6.3.0","6.4.0","6.5.0","6.6.0","6.7.0","6.8.0","6.9.0"]}],"products":[{"vendor":"orckestra","product":"c1-cms-foundation"},{"vendor":"orckestra","product":"c1_cms"}],"references":[{"url":"https://github.com/Orckestra/C1-CMS-Foundation/security/advisories/GHSA-gfhp-jgp6-838j","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/Orckestra/C1-CMS-Foundation/pull/814","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://github.com/Orckestra/C1-CMS-Foundation/releases/tag/v6.13","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-39256","tags":["advisory"]},{"url":"https://github.com/Orckestra/C1-CMS-Foundation/commit/af856ab5a62d19acf6aea1b1f4c6c3c4985c9446","tags":["web"]},{"url":"https://github.com/advisories/GHSA-gfhp-jgp6-838j"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/39xxx/CVE-2022-39256.json","tags":["advisory"]},{"url":"https://github.com/Orckestra/C1-CMS-Foundation","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2022-39256","title":"Orckestra C1 CMS's deserialization of untrusted data allows for arbitrary code execution.","description":"Orckestra C1 CMS is a .NET based Web Content Management System. A vulnerability in versions prior to 6.13 allows remote attackers to execute arbitrary code on affected installations of Orckestra C1 CMS. Authentication is required to exploit this vulnerability. The authenticated user may perform the actions unknowingly by visiting a specially crafted site. This issue is patched in C1 CMS v6.13. There are no known workarounds.","status":"published","published":"2022-09-27T15:00:15Z","modified":"2025-04-23T16:55:22.696Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:34:39.559326Z"}],"euvd":[{"id":"EUVD-2022-6820","description":"Orckestra C1 CMS is a .NET based Web Content Management System. A vulnerability in versions prior to 6.13 allows remote attackers to execute arbitrary code on affected installations of Orckestra C1 CMS. Authentication is required to exploit this vulnerability. The authenticated user may perform the actions unknowingly by visiting a specially crafted site. This issue is patched in C1 CMS v6.13. There are no known workarounds.","status":"published","published":"2022-09-27T15:00:15Z","modified":"2025-04-23T16:55:22Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T20:52:11.440801Z"}],"ghsa":[{"id":"GHSA-gfhp-jgp6-838j","title":"Orckestra C1 CMS's deserialization of untrusted data allows for arbitrary code execution.","description":"### Impact\n\nThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Orckestra C1 CMS. \nAuthentication is required to exploit this vulnerability.\nThe authenticated user may perform the actions unknowingly by visiting a specially crafted site.\n\n### Patches\nPatched in C1 CMS v6.13\n\n### Workarounds\nUpgrade to C1 CMS v6.13 or newer is required\n\n### Credit\nThis issue was discovered and reported by Markus Wulftange  / [Code White GmbH](https://code-white.com/en/).\n","status":"published","published":"2022-09-30T04:54:06Z","modified":"2023-04-03T18:51:10Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:36:49.768564Z"}],"nvd":[{"id":"CVE-2022-39256","description":"Orckestra C1 CMS is a .NET based Web Content Management System. A vulnerability in versions prior to 6.13 allows remote attackers to execute arbitrary code on affected installations of Orckestra C1 CMS. Authentication is required to exploit this vulnerability. The authenticated user may perform the actions unknowingly by visiting a specially crafted site. This issue is patched in C1 CMS v6.13. There are no known workarounds.","status":"published","published":"2022-09-27T15:15:09.373Z","modified":"2026-06-17T04:58:00.68Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:07:28.501364Z"}],"osv":[{"id":"CVE-2022-39256","title":"Orckestra C1 CMS's deserialization of untrusted data allows for arbitrary code execution.","description":"Orckestra C1 CMS is a .NET based Web Content Management System. A vulnerability in versions prior to 6.13 allows remote attackers to execute arbitrary code on affected installations of Orckestra C1 CMS. Authentication is required to exploit this vulnerability. The authenticated user may perform the actions unknowingly by visiting a specially crafted site. This issue is patched in C1 CMS v6.13. There are no known workarounds.","status":"published","published":"2022-09-27T15:00:15Z","modified":"2026-10-28T02:31:13.827952496Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T15:44:26.53798Z"},{"id":"GHSA-gfhp-jgp6-838j","title":"Orckestra C1 CMS's deserialization of untrusted data allows for arbitrary code execution.","description":"### Impact\n\nThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Orckestra C1 CMS. \nAuthentication is required to exploit this vulnerability.\nThe authenticated user may perform the actions unknowingly by visiting a specially crafted site.\n\n### Patches\nPatched in C1 CMS v6.13\n\n### Workarounds\nUpgrade to C1 CMS v6.13 or newer is required\n\n### Credit\nThis issue was discovered and reported by Markus Wulftange  / [Code White GmbH](https://code-white.com/en/).\n","status":"published","published":"2022-09-30T04:54:06Z","modified":"2023-11-08T04:10:16.883378Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T15:46:47.822182Z"}]}}