CVE-2025-27802

The Episerver Content Management System (CMS) by Optimizely was affected by multiple Stored Cross-Site Scripting (XSS) vulnerabilities. This allowed an authenticated attacker to execute malicious JavaScript code in the victim's browser. RTE properties (text fields), which could be used in the "Edit" section of the CMS, allowed the input of arbitrary text. It was possible to input malicious JavaScript code in these properties that would be executed if a user visits the previewed page. Attackers needed at least the role "WebEditor" in order to exploit this issue. Affected products: Version 11.X: EPiServer.CMS.Core (<11.21.4) with EPiServer.CMS.UI (<11.37.5), Version 12.X: EPiServer.CMS.Core (<12.22.1) with EPiServer.CMS.UI (<11.37.3)
CVSS

No CVSS.

Configurations

No configuration.

History

29 Jul 2025, 10:15

Type Values Removed Values Added
References
  • {'url': 'https://support.optimizely.com/hc/en-us/articles/37757063222029-2024-Optimizely-CMS-12-PaaS-release-notes#h_01JN4AZV48WKNADH3KWC2GYDS5', 'name': 'https://support.optimizely.com/hc/en-us/articles/37757063222029-2024-Optimizely-CMS-12-PaaS-release-notes#h_01JN4AZV48WKNADH3KWC2GYDS5', 'tags': [], 'refsource': ''}
  • {'url': 'https://support.optimizely.com/hc/en-us/articles/30886353301645-2025-Optimizely-CMS-11-PaaS-release-notes#h_01K09MR1SZS4FEAPD4478GQ0FR', 'name': 'https://support.optimizely.com/hc/en-us/articles/30886353301645-2025-Optimizely-CMS-11-PaaS-release-notes#h_01K09MR1SZS4FEAPD4478GQ0FR', 'tags': [], 'refsource': ''}
  • () https://api.nuget.optimizely.com/packages/episerver.cms.core/12.22.1# -
  • () https://api.nuget.optimizely.com/packages/episerver.cms.core/11.21.4# -
  • () https://r.sec-consult.com/optimizely -

28 Jul 2025, 09:15

Type Values Removed Values Added
New CVE

Information

Published : 2025-07-28 09:15

Updated : 2025-07-29 10:15


NVD link : CVE-2025-27802

Mitre link : CVE-2025-27802


JSON object : View

Products Affected

No product.

CWE

No CWE.