CVE-2024-12907Network attack vector

Reflected XSS via access-denied GET parameter

Published Jan 2, 2025 · Updated Jan 2, 2025

Reflected XSS in Kentico CMS 7 allows remote attackers to execute script in a user's browser through a crafted access-denied URL. The /CMSMessages/AccessDenied.aspx endpoint places a manipulated GET parameter into its response without neutralizing executable content. A user must click the crafted link; the resulting script runs in that site's browser context and can act with that user's access.

CVSS severity5.3
Medium
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Kentico CMS 7 allows remote attackers to execute script in a user's browser through a crafted access-denied URL. The /CMSMessages/AccessDenied.aspx endpoint places a manipulated GET parameter into its response without neutralizing executable content. A user must click the crafted link; the resulting script runs in that site's browser context and can act with that user's access.

The record

CVE
CVE-2024-12907
Published
Jan 2, 2025
Updated
Jan 2, 2025
Vendor
Kentico
Product
Kentico CMS
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 2, 2025CVE publishedPublication date reported by the CVE source.
  2. Jan 2, 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=7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Kentico · Kentico CMSversion=7

Published CVSS scores

5.3CERT.PLCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA: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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001User Execution: Malicious Link

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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