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Vulnerability record · CVE-2025-5591 · published 5 January 2026

CVE-2025-5591: Kentico xperience cross-site scripting vulnerability

Kentico · Xperience

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.

7.7 CVSS 4.0 High EPSS 0.17% · top 94.4% CWE-79 · Cross-site scriptingCWE-1188 · Insecure default initialization
7.7CVSS 4.0 base score
0.17%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

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.

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/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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.themissinglink.com.au/security-advisories/cve-2025-5591 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2025-2746Kentico Xperience Staging Sync Server authentication bypassKentico Xperience through 13.0.172 mishandles empty SHA1 usernames in digest authentication on the Staging Sync Server, allowing an attacker to bypas…KEVEPSS 73%analysed9.8CVE-2025-2747Kentico Xperience Staging Sync Server authentication bypassKentico Xperience through 13.0.178 contains an authentication bypass in the Staging Sync Server password handling when the server password type is se…KEVEPSS 97%analysed9.8CVE-2019-10068Kentico Xperience staging service header bypass leads to .NET deserialization RCEKentico Xperience fails to validate security headers on its staging service, allowing a crafted request to skip initial authentication and reach .NET…KEVEPSS 95%analysed7.2CVE-2025-2749Kentico Xperience path traversal and file upload lead to RCEKentico Xperience through 13.0.178 allows an authenticated Staging Sync Server user to upload arbitrary data to relative paths, enabling path travers…KEVEPSS 4.1%analysed9.8CVE-2025-32370Kentico xperience unrestricted file upload vulnerabilityKentico Xperience before 13.0.178 has a specific set of allowed ContentUploader file extensions for unauthenticated uploads; however, because .zip is…EPSS 1.5%9.8CVE-2017-17736Kentico CMS install page access control bypass grants adminKentico 9.0 before 9.0.51 and 10.0 before 10.0.48 exposes CMSInstall/install.aspx in a way that bypasses access control, letting a remote unauthentic…EPSS 68%analysed9.1CVE-2019-12102Kentico xperience incorrect permission assignment vulnerabilityKentico 11 through 12 lets attackers upload and explore files without authentication via the cmsmodules/medialibrary/formcontrols/liveselectors/inser…EPSS 2.2%8.8CVE-2018-19453Kentico xperience unrestricted file upload vulnerabilityKentico CMS before 11.0.45 allows unrestricted upload of a file with a dangerous type.EPSS 1.4%

Source: NIST National Vulnerability Database (record CVE-2025-5591), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.