# CVE-2019-9874

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.

- Page: https://www.vulneraibility.com/cve/CVE-2019-9874
- CVSS: 9.8
- Known exploited: yes, in CISA KEV since 2025-03-26; CISA due date 2025-04-16
- EPSS: 83.74%
- Detection templates only, no public exploit found: 1 Nuclei template
- CISA SSVC: exploitation active, automatable yes, technical impact total (assessed 2025-03-26)
- Weakness: CWE-502
- Published: 2019-05-31

## Affected

- sitecore:cms
- sitecore:experience_platform

## References

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

---
Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.