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Possible injection of HTML in a unintended form

Low
bergmania published GHSA-xxc6-35r7-796w Dec 12, 2023

Package

nuget Umbraco.CMS (NuGet)

Affected versions

> 8.0.0

Patched versions

8.18.10, 10.7.0, 12.1.0

Description

Impact

A user with access to a specific part of the backoffice is able to inject HTML code into a form where it is not intended.

Explanation of the vulnerability

A person with access to the backoffice and the "users" section could send a user invite and inject HTML code into the invite message.

Severity

Low

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
High
User interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
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:H/UI:R/S:U/C:N/I:N/A:N

CVE ID

CVE-2023-38694

Weaknesses

No CWEs