Critical 9.8Known exploited (CISA KEV)Published May 31, 2019

CVE-2019-9874Deserialization 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 arbitrar…

Updated under an hour ago (2026-10-19 08:40 UTC)

Does this affect you?

It affects sitecore cms and 1 other product. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Mar 26, 2025; federal agencies had to remediate by Apr 16, 2025. Treat that date as your deadline.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for sitecore cms

Exploited in the last 30 days

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.

CVSS: 9.8 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-502
Known exploited: Added to CISA KEV Mar 26, 2025; federal remediation due Apr 16, 2025Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
EPSS (exploitation in the next 30 days): 83.74% (percentile 100)
Assigned by: mitre
NVD analysis: Analyzed
Record last updated: Oct 21, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

sitecore cms sitecore:cms	from 7.0 through 7.2	NVD
sitecore experience_platform sitecore:experience_platform	from 7.5 through 8.2	NVD

References

https://dev.sitecore.net/Downloads.aspxx-refsource-misc, product, vendor-advisory
https://www.synacktiv.com/blog.htmlx-refsource-misc, third-party-advisory
https://www.synacktiv.com/ressources/advisories/Sitecore_CSRF_deserialize_RCE.pdfx-refsource-misc, exploit, patch, third-party-advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-9874us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.