Sitecore Data Breach History
WebsiteSitecore is a global leader of end-to-end digital experience software. Unifying data, content, commerce, and experiences, our SaaS-enabled, composable platform empowers brands like L’Oréal, Microsoft, and United Airlines to deliver unforgettable interactions across every touchpoint. Our solution provides the cutting-edge tools brands need to build stronger connections with customers, while creating content efficiencies to stand out as transformation and innovation leaders.
This page shows all data breaches of Sitecore. View the complete breach timeline, records exposed, root causes, and AI breach risk score. BreachHistory tracks disclosed data breaches worldwide.
Data Breach Timeline — All Sitecore Breaches
Sitecore Data Breach Summary
This page tracks the Sitecore data breach history and cybersecurity incidents affecting Sitecore (United States). BreachHistory currently indexes 1 publicly disclosed or catalogued incident spanning 2025, with approximately an unknown number of records reported as exposed across all indexed events. These totals may include overlapping datasets or third-party estimates and should not be interpreted as unique affected users.
The Sitecore breach timeline includes major data breaches, cyber attacks, data leaks, credential exposures, API abuse, and other security incidents. Each incident provides details on the estimated records exposed, attack method, affected data types, and supporting public sources. Currently, 0 incidents are company-confirmed.
Largest Sitecore Data Breaches
Indexed Sitecore incidents are listed below. Where a public count is unavailable, the catalog shows unknown records exposed. Open each page for attack method, data types, and sources.
- 2025 2025 Sitecore Experience Platform — CVE-2025-53690 ViewState / machineKey RCE; active exploitation — about Unknown records exposed · Catalogued incident
What Information Was Exposed?
Depending on the incident, exposed data may include passwords and login credentials, and other personal information (PII). The exact data varies between incidents, so review each breach page before assuming your information was affected.
Sitecore Data Breach 2026
At the time of this update, no Sitecore data breach has been catalogued for 2026. New incidents are added as official disclosures, regulatory filings, or credible cybersecurity reports become available.
What To Do If You Were Affected
If you believe your account may have been involved in a Sitecore data breach, change any reused passwords, enable multi-factor authentication (MFA), monitor your account for suspicious activity, and be cautious of phishing emails or fake breach notifications.
This Sitecore breach history is maintained by BreachHistory using public disclosures, regulatory filings, security research, and clearly labelled third-party claims. For the complete breach timeline, records exposed, incident details, and AI Breach Risk Score, explore the sections on this page.