CVE-2024-47819Network attack vector

Privilege escalation via unsanitized stored dictionary names

Published Oct 22, 2024 · Updated Oct 22, 2024

Stored XSS in Umbraco CMS 14.0.0 through 14.3.0 allows remote authenticated users to run script in a backoffice user’s browser. The Dictionary section stores a crafted dictionary name without neutralizing script-related HTML before rendering it in the backoffice. Dictionary access and interaction by a higher-privileged user are required; the resulting session can expose protected content or grant administrator access.

CVSS severity4.2
Medium
EPSS probability0.33%
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 Umbraco CMS 14.0.0 through 14.3.0 allows remote authenticated users to run script in a backoffice user’s browser. The Dictionary section stores a crafted dictionary name without neutralizing script-related HTML before rendering it in the backoffice. Dictionary access and interaction by a higher-privileged user are required; the resulting session can expose protected content or grant administrator access.

The record

CVE
CVE-2024-47819
Published
Oct 22, 2024
Updated
Oct 22, 2024
Vendor
Umbraco
Product
Umbraco CMS
Classifications
CWE-80, CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 22, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 22, 2024Record 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=>= 14.0.0, < 14.3.1
  2. Affected versionversion=14.0.0 <=14.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Umbraco · Umbraco CMSversion=>= 14.0.0, < 14.3.1; version=14.0.0 <=14.3.1

Published CVSS scores

8.7NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
4.2GitHubCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-80Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1059.007Command and Scripting Interpreter: JavaScript

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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