CVE-2019-9874

State: Published
Severity: 9.8 Critical
Published: May 31, 2019
Updated: Oct 21, 2025
Reserved: Mar 19, 2019

Description

Deserialization of Untrusted Data in the Sitecore.Security.AntiCSRF (aka anti CSRF) module in Sitecore CMS 7.0 to 7.2 and Sitecore XP 7.5 to 8.2 allows an unauthenticated attacker to execute arbitrary code by sending a serialized .NET object in the HTTP POST parameter __CSRFTOKEN.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-502 Deserialization of Untrusted Data

Affected Products

Product	Versions
n/an/a	n/aAffected

References

https://dev.sitecore.net/Downloads.aspx
https://www.synacktiv.com/blog.html
https://www.synacktiv.com/ressources/advisories/Sitecore_CSRF_deserialize_RCE.pdf
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-9874government-resource

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