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XSS/HTML Injection Vulnerability in Umbraco Backoffice Components

Moderate severity GitHub Reviewed Published Jan 21, 2025 in umbraco/Umbraco-CMS

Package

npm @umbraco-cms/backoffice (npm)

Affected versions

>= 14.0.0, < 14.3.2
>= 15.0.0, < 15.1.2

Patched versions

14.3.2
15.1.2
nuget Umbraco.Cms.StaticAssets (NuGet)
>= 14.0.0, < 14.3.2
>= 15.0.0, < 15.1.2
14.3.2
15.1.2

Description

Impact

Authenticated users are able to exploit an XSS vulnerability when viewing certain localized backoffice components.

Patches

Will be patched in 14.3.2 and 15.1.2.

Note:
This issue was reported by Pratik Patil from NetSPI @Nexusss-ppatil

References

@AndyButland AndyButland published to umbraco/Umbraco-CMS Jan 21, 2025
Published by the National Vulnerability Database Jan 21, 2025
Published to the GitHub Advisory Database Jan 21, 2025
Reviewed Jan 21, 2025

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(11th percentile)

Weaknesses

CVE ID

CVE-2025-24012

GHSA ID

GHSA-wv8v-rmw2-25wc

Source code

Credits

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