CVE-2025-5591

Stored Cross-site Scripting (XSS) in Kentico Xperience 13

Published Jan 5, 2026 CVSS 4.0 · 7.7 High EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Solution

Change Kentico's default configuration as per the vendor's advisory: https://docs.kentico.com/13/macro-expressions/reference-macro-methods#advanced-text-processing

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:kentico:xperience:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Kentico
Kentico xperience
Vendors & Products Kentico
Kentico xperience
Type Values Removed Values Added
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.
Title Stored Cross-site Scripting (XSS) in Kentico Xperience 13
Weaknesses CWE-1188
CWE-79
References
Metrics cvssV4_0

{'score': 7.7, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
TML
Published
Updated
Jan 5, 2026, 8:34 PM
Reserved
Jun 4, 2025, 12:11 AM
Status
Analyzed
Published
Jan 5, 2026, 1:15 AM
Modified
Oct 7, 2026, 11:10 AM