CVE-2025-27802 describes multiple Stored Cross-Site Scripting (XSS) vulnerabilities in Optimizely's Episerver Content Management System (CMS), specifically affecting EPiServer.CMS.Core versions prior to 11.21.4 (with EPiServer.CMS.UI <11.37.5) and 12.22.1 (with EPiServer.CMS.UI <11.37.3). An authenticated attacker with at least "WebEditor" privileges could inject malicious JavaScript into RTE properties, which would execute when a user previewed the affected page. Rated Medium (CVSS 4.8), this vulnerability requires high privileges and user interaction, leading to low impact on confidentiality and integrity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed on the CISA KEV catalog.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
| Optimizely | Episerver Content Management System (CMS) | >= 11.x, < 11.21.4, >= 12.x, < 12.22.1CNA affecteddefault unaffected |
CVSS version used by this source: 4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.