# CVE-2019-9874: Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability

Source: https://junglewise.ai/threats/cve-2019-9874-sitecore-cms-and-experience-platform-xp-deserialization  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-03-26. Updated: 2026-05-09  
License: CC BY 4.0 with a link back

CVE-2019-9874 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2025-03-26

Sitecore CMS and Experience Platform (XP) contain a deserialization vulnerability in the Sitecore.Security.AntiCSRF module. An unauthenticated remote attacker can execute arbitrary code by sending a malicious serialized .NET object via the __CSRFTOKEN HTTP POST parameter.

Technologies: [Sitecore CMS](https://junglewise.ai/threats/technologies/cms), [Sitecore Experience Platform (XP)](https://junglewise.ai/threats/technologies/experience-platform-xp). Vendors: [Sitecore](https://junglewise.ai/threats/vendors/sitecore).

## Quick answers

**Is CVE-2019-9874 exploited in the wild?** Yes. CVE-2019-9874 is known to be exploited in the wild, first recorded on 26 March 2025. Treat it as urgent.

**How severe is CVE-2019-9874?** Critical severity, with a CVSS score of 9.8, published 26 March 2025.

**Which products and versions are affected?** Sitecore CMS 7.0 to 7.2; Sitecore Experience Platform (XP) 7.5 to 8.2.

**Is there a fix for CVE-2019-9874?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2019-9874 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2019-9874?** Check whether you run Sitecore CMS or Sitecore Experience Platform (XP). Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Sitecore CMS 7.0 to 7.2
- Sitecore Experience Platform (XP) 7.5 to 8.2

## Timeline

- 2019-05-31: disclosed: NVD Published Date
- 2025-03-26: kev added: Added to CISA Known Exploited Vulnerabilities Catalog

## Related threats

- [Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability](https://junglewise.ai/threats/cve-2019-9875-sitecore-cms-and-experience-platform-xp-deserialization)