REDHAT-BUG-2428098: High severity Plesk Plesk Obsidian vulnerability

Published Jan 8, 2026
·
Updated

Plesk Obsidian versions 8.0.1 through 18.0.73 are vulnerable to a Denial of Service (DoS) condition. The vulnerability exists in the getpassword.php endpoint, where a crafted request containing a malicious payload can cause the affected web interface to continuously reload, rendering the service unavailable to legitimate users. An attacker can exploit this issue remotely without authentication, resulting in a persistent availability impact on the affected Plesk Obsidian instance.

Affected Software

1 affected component
Plesk Plesk Obsidian>=8.0.1<=18.0.73

Event History

Jan 8, 2026
Data Sourced
via Red Hat·07:02 PM
DescriptionSeverityAffected Software
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Frequently Asked Questions

1

What is the severity of REDHAT-BUG-2428098?

The severity of REDHAT-BUG-2428098 is classified as high with a score of 7.

2

How do I fix REDHAT-BUG-2428098?

To fix REDHAT-BUG-2428098, users should update their Plesk Obsidian to the latest version beyond 18.0.73.

3

What is the risk associated with REDHAT-BUG-2428098?

The risk associated with REDHAT-BUG-2428098 is rated at 33, indicating a significant impact on service availability.

4

Which versions of Plesk are affected by REDHAT-BUG-2428098?

Plesk Obsidian versions 8.0.1 through 18.0.73 are affected by REDHAT-BUG-2428098.

5

What kind of vulnerability is REDHAT-BUG-2428098?

REDHAT-BUG-2428098 is a Denial of Service (DoS) vulnerability affecting the get_password.php endpoint.

Contact

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