Vulnerability · Published Jan 5, 2026 · Assigned by TML
CVE-2025-5591Stored Cross-site Scripting (XSS) in Kentico Xperience 13
High 7.7
In plain English
A high-severity cross-site scripting in Kentico Xperience from Kentico. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities).
Severity (CVSS 4.0)7.7High
Exploit odds (30 days)0.2%top 93.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Kentico Xperience 13 is vulnerable to a stored cross-site scripting attack via a form component, allowing an attacker to hijack a victim user’s session and perform actions in their security context.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Kentico | Kentico Xperience | 13.0.167 |
Weakness: CWE-79, CWE-1188 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U