CVE-2019-9874

critical

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

https://www.synacktiv.com/blog.html

https://thehackernews.com/2025/03/cisa-flags-two-six-year-old-sitecore.html

https://www.cisa.gov/news-events/alerts/2025/03/26/cisa-adds-two-known-exploited-vulnerabilities-catalog

https://www.synacktiv.com/ressources/advisories/Sitecore_CSRF_deserialize_RCE.pdf

https://dev.sitecore.net/Downloads.aspx

Details

Source: Mitre, NVD

Published: 2019-05-31

Updated: 2025-04-04

Known Exploited Vulnerability (KEV)

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.23116