CVE-2019-9874

sitecore cms, sitecore experience platform

Published 31 May 2019 · updated 17 Jun 2026 · Analyzed

9.8 Critical · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 26 Mar 2025, with a remediation deadline of 16 Apr 2025 for US federal agencies.

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.

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.

References

dev.sitecore.net/Downloads.aspx · Product, Vendor Advisory
www.synacktiv.com/blog.html · Third Party Advisory
www.synacktiv.com/ressources/advisories/Sitecore_CSRF_deserialize_RCE.pdf · Exploit, Patch, Third Party Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-9874 · US Government Resource