Executive Summary

This vulnerability exists in OpenProject, a web-based project management software. In certain versions before 16.6.9, 17.0.6, 17.1.3, and 17.2.1, the Repositories module did not properly escape filenames displayed from repositories. An attacker with push access to the repository could create commits with filenames containing malicious HTML code. This code would be injected into the page without proper sanitation, leading to a persistent cross-site scripting (XSS) attack. Any project member viewing the repositories page showing the changeset with the malicious filename could be affected.

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Impact Analysis

The vulnerability allows an attacker with push access to execute persistent cross-site scripting attacks against all members of a project who view the affected repositories page. This can lead to unauthorized actions performed in the context of the victim's session, data theft, or compromise of user accounts. The CVSS score of 9.0 indicates a high severity with potential impacts on confidentiality, integrity, and availability.

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Compliance Impact

I don't know

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Detection Guidance

I don't know

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Mitigation Strategies

To mitigate this vulnerability, you should upgrade OpenProject to one of the fixed versions: 16.6.9, 17.0.6, 17.1.3, or 17.2.1.

This update addresses the improper escaping of filenames in the Repositories module that allowed persisted XSS attacks.

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