CVE-2019-9875
Last modified
CVE-2019-9875 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Deserialization of Untrusted Data in the anti CSRF module in Sitecore through 9.1 allows an authenticated attacker to execute arbitrary code by sending a serialized .NET object in an HTTP POST parameter.. CISA has confirmed active exploitation in the wild. EPSS estimates a 14.15% chance of exploitation in the next 30 days.
Description
Deserialization of Untrusted Data in the anti CSRF module in Sitecore through 9.1 allows an authenticated attacker to execute arbitrary code by sending a serialized .NET object in an HTTP POST parameter.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Sitecore | Cms | <= 9.1 |
References
- https://dev.sitecore.net/Downloads.aspxProduct, Vendor Advisory
- https://www.synacktiv.com/blog.htmlThird Party Advisory
- https://www.synacktiv.com/ressources/advisories/Sitecore_CSRF_deserialize_RCE.pdfExploit, Patch, Third Party Advisory
- https://dev.sitecore.net/Downloads.aspxProduct, Vendor Advisory
- https://www.synacktiv.com/blog.htmlThird Party Advisory
- https://www.synacktiv.com/ressources/advisories/Sitecore_CSRF_deserialize_RCE.pdfExploit, Patch, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-9875US Government Resource
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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