CVE-2023-53737Network attack vector

Administration-interface script execution via stored localization payload

Published Dec 18, 2025 · Updated Dec 18, 2025

Stored XSS in Kentico Xperience 13.0.101 and earlier allows remote authenticated users to execute scripts via the Localization application. The application stores a malicious localization payload and later renders it across administration pages, but Kentico has not disclosed the affected field or missing output-encoding operation. Global Administrator privilege is required by default, and execution can affect multiple parts of the administration interface.

CVSS severity5.1
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Kentico Xperience 13.0.101 and earlier allows remote authenticated users to execute scripts via the Localization application. The application stores a malicious localization payload and later renders it across administration pages, but Kentico has not disclosed the affected field or missing output-encoding operation. Global Administrator privilege is required by default, and execution can affect multiple parts of the administration interface.

The record

CVE
CVE-2023-53737
Published
Dec 18, 2025
Updated
Dec 18, 2025
Vendor
Kentico
Product
Kentico Xperience
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Dec 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 18, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=13.0.101

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Kentico · Kentico Xperienceversion=0 <=13.0.101

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
5.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
4.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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