CVE-2025-2748: Kentico Xperience · XSS or 'Cross-site Scripting'
Affects Kentico XperienceSource CVE Database V5
Not known to be exploited · public detection template (Nuclei) · 60% EPSS · CVSS 6.1 Medium.
Data as of 26 Oct 2026, 15:59 UTC
- EPSS
- 60.5% chance of exploitation in 30 days – higher than 99% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 24 Mar 2025
Detectable: evidence found.
nuclei template: Kentico Xperience CMS - Unauthenticated Stored XSS
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Kentico Xperience | Affected
| Fixed in– |
AI-suggested
European organizations should implement the following specific mitigations: 1) Immediately review and restrict the multiple-file upload functionality in Kentico Xperience, disabling it if not essential. 2) Apply strict server-side validation and sanitization of all uploaded files, ensuring that executable scripts or HTML content cannot be uploaded or rendered. 3) Implement Content Security Policy (CSP) headers to restrict the execution of inline scripts and untrusted sources, mitigating the impact of XSS payloads. 4) Monitor web application logs for unusual file upload patterns or suspicious user activity. 5) Educate users and administrators about the risks of interacting with untrusted content and phishing attempts. 6) Stay updated with Kentico security advisories and apply patches promptly once available. 7) Consider deploying Web Application Firewalls (WAFs) with rules tuned to detect and block XSS attempts targeting Kentico Xperience. 8) Conduct regular security assessments and penetration testing focusing on file upload and input validation controls.
Description
The Kentico Xperience application does not fully validate or filter files uploaded via the multiple-file upload functionality, which allows for stored XSS.This issue affects Kentico Xperience through 13.0.178.