Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 26/03/2025. Patch affected systems as an emergency.
| Package | Affected versions | Patched versions |
|---|---|---|
| cms | ≥ 7.0, ≤ 7.2 | |
| experience platform | ≥ 7.5, ≤ 8.2 |
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.
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