CVE-2025-27800 (GCVE-0-2025-27800)
Vulnerability from cvelistv5 – Published: 2025-07-28 08:33 – Updated: 2025-11-03 19:46
VLAI
EPSS
VEX
Title
Stored Cross-Site Scripting in Episerver Content Management System (CMS) Admin Dashboard
Summary
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.
The Admin dashboard offered the functionality to add gadgets to the dashboard.
This included the "Notes" gadget. An authenticated attacker with the corresponding
access rights (such as "WebAdmin") that was impersonating the victim could insert
malicious JavaScript code in these notes that would be executed if the victim
visited the dashboard.
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)
Severity
4.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-07-28 16:53 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
SEC-VLab
CNA
References
4 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Optimizely | Episerver Content Management System (CMS) |
Affected:
11.x , < 11.21.4
(custom)
Affected: 12.x , < 12.22.1 (custom) |
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