CVE-2019-9874
CriticalActively exploited (CISA KEV)
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.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Sitecore CMS and Experience Platform (XP)
PublishedMay 31, 2019
First seenMay 31, 2019
Added to KEVMar 26, 2025
Weakness typeCWE-502Deserialization of untrusted data
How to fix
CISA 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.
CISA due date: Apr 16, 2025Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| sitecore cms | 7.0 ≤ v ≤ 7.2 | — |
| sitecore experience_platform | 7.5 ≤ v ≤ 8.2 | — |
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