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OpenCMS Cross-Site Scripting vulnerability

Moderate severity GitHub Reviewed Published May 30, 2024 to the GitHub Advisory Database • Updated May 30, 2024

Package

maven org.opencms:opencms-core (Maven)

Affected versions

= 16.0

Patched versions

17.0

Description

Two Cross-Site Scripting vulnerabilities have been discovered in Alkacon's OpenCMS affecting version 16, which could allow a user:
with sufficient privileges to create and modify web pages through the admin panel, can execute malicious JavaScript code, after inserting code in the title field. Another could having the roles of gallery editor or VFS resource manager will have the permission to upload images in the .svg format containing JavaScript code. The code will be executed the moment another user accesses the image.

References

Published by the National Vulnerability Database May 30, 2024
Published to the GitHub Advisory Database May 30, 2024
Reviewed May 30, 2024
Last updated May 30, 2024

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
None
Scope
Changed
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:N/S:C/C:L/I:L/A:N

EPSS score

0.043%
(11th percentile)

Weaknesses

CVE ID

CVE-2024-5520

GHSA ID

GHSA-vg6x-pchq-98mg

Source code

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