CVE-2025-27802: medium-severity vulnerability in Optimizely Episerver Content Management System…
Stored Cross-Site Scripting in Episerver Content Management System (CMS) Edit Preview
Published · Updated
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 4.8epss 0.3%
exploitation probability
0.3%top 74% of all CVEs
observed exploitation
nono source reports it
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:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:L/SC:L/SI:L/SA:N
Affected products
Optimizely · Episerver Content Management System (CMS)Related CVEs — Optimizely Episerver Content Management System…
In the same product, most dangerous first.