{"id":"CVE-2019-9875","aliases":["EUVD-2019-19231","GHSA-7gvq-j6pg-875g"],"status":"published","title":"Deserialization of Untrusted Data in the anti CSRF module in Sitecore through 9.1 allows an...","description":"Deserialization of Untrusted Data in the anti CSRF module in Sitecore through 9.1 allows an authenticated attacker to execute arbitrary code by sending a serialized .NET object in an HTTP POST parameter.","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":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.25436,"percentile":0.97961,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":false,"fix_available":false},"cwes":["CWE-502"],"published":"2019-05-31T20:34:46Z","modified":"2026-06-17T02:44:46Z","kev":{"date_added":"2025-03-26","due_date":"2025-04-16","required_action":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","known_ransomware_use":"Unknown"},"exploitation":[{"source":"euvd","since":"2025-03-26"},{"source":"kev","since":"2025-03-26"}],"products":[{"vendor":"sitecore","product":"cms"},{"vendor":"sitecore","product":"cms and experience platform (xp)"}],"references":[{"url":"https://dev.sitecore.net/Downloads.aspx","tags":["x_refsource_MISC","x_transferred","Product","Vendor Advisory"]},{"url":"https://www.synacktiv.com/blog.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://www.synacktiv.com/ressources/advisories/Sitecore_CSRF_deserialize_RCE.pdf","tags":["x_refsource_MISC","x_transferred","Exploit","Patch","Third Party Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-9875","tags":["government-resource","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-9875"},{"url":"https://github.com/advisories/GHSA-7gvq-j6pg-875g"}],"sources":{"cve":[{"id":"CVE-2019-9875","description":"Deserialization of Untrusted Data in the anti CSRF module in Sitecore through 9.1 allows an authenticated attacker to execute arbitrary code by sending a serialized .NET object in an HTTP POST parameter.","status":"published","published":"2019-05-31T20:34:46Z","modified":"2025-10-21T23:45:35.858Z","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":"adp"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:20:20.397093Z"}],"euvd":[{"id":"EUVD-2019-19231","description":"Deserialization of Untrusted Data in the anti CSRF module in Sitecore through 9.1 allows an authenticated attacker to execute arbitrary code by sending a serialized .NET object in an HTTP POST parameter.","status":"published","published":"2019-05-31T20:34:46Z","modified":"2025-10-21T23:45:35Z","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"}],"exploited_since":"2025-03-26","updated_at":"2026-11-02T20:31:24.172282Z"}],"ghsa":[{"id":"GHSA-7gvq-j6pg-875g","title":"Deserialization of Untrusted Data in the anti CSRF module in Sitecore through 9.1 allows an...","description":"Deserialization of Untrusted Data in the anti CSRF module in Sitecore through 9.1 allows an authenticated attacker to execute arbitrary code by sending a serialized .NET object in an HTTP POST parameter.","status":"published","published":"2022-05-24T16:46:56Z","modified":"2025-10-22T00:31:41Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T15:04:04.176931Z"}],"kev":[{"id":"CVE-2019-9875","title":"Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability","description":"Sitecore CMS and Experience Platform (XP) contain a deserialization vulnerability in the Sitecore.Security.AntiCSRF module that allows an authenticated attacker to execute arbitrary code by sending a serialized .NET object in the HTTP POST parameter __CSRFTOKEN.","cwes":["CWE-502"],"kev":{"date_added":"2025-03-26","due_date":"2025-04-16","required_action":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","known_ransomware_use":"Unknown"},"updated_at":"2026-11-02T17:00:15.999436Z"}],"nvd":[{"id":"CVE-2019-9875","description":"Deserialization of Untrusted Data in the anti CSRF module in Sitecore through 9.1 allows an authenticated attacker to execute arbitrary code by sending a serialized .NET object in an HTTP POST parameter.","status":"published","published":"2019-05-31T21:29:06.187Z","modified":"2026-06-17T02:44:46.273Z","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":"primary"},{"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":"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":"2026-11-02T14:05:14.729983Z"}]}}