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.
Plesk Obsidian allows a CSRF attack, e.g., via the /api/v2/cli/commands REST API to change an Admin password. NOTE: Obsidian is a specific version of the Plesk product: version numbers were used through version 12, and then the convention was changed so that versions are identified by names ("Obsidian"), not numbers.
End of life: 7/8/2025, Latest version: 18.0.69.4
DISPUTED A Host Header Injection issue on the Login page of Plesk Obsidian through 18.0.49 allows attackers to redirect users to malicious websites via a Host request header. NOTE: the vendor's position is "the ability to use arbitrary domain names to access the panel is an intended feature."
End of life: 5/27/2025, Latest version: 18.0.68.2
End of life: 4/15/2025, Latest version: 18.0.67.3
End of life: 3/4/2025, Latest version: 18.0.66.2
End of life: 3/4/2025, Latest version: 18.0.66.2
End of life: 1/21/2025, Latest version: 18.0.65.2
End of life: 1/21/2025, Latest version: 18.0.65.2
Plesk 17.0 through 18.0.31 version, is vulnerable to a Cross-Site Scripting. A malicious subscription owner (either a customer or an additional user), can fully compromise the server if an administrator visits a certain page in Plesk related to the malicious subscription.
End of life: 12/10/2024, Latest version: 18.0.64.1
End of life: 12/10/2024, Latest version: 18.0.64.1
End of life: 10/29/2024, Latest version: 18.0.63.4
End of life: 10/29/2024, Latest version: 18.0.63.4
Plesk 8.6.0, when short mail login names (SHORTNAMES) are enabled, allows remote attackers to bypass authentication and send spam e-mail via a message with (1) a base64-encoded username that begins with a valid shortname, or (2) a username that matches a valid password, as demonstrated using (a) SMTP and qmail, and (b) Courier IMAP and POP3.
Uncontrolled search path element vulnerability in Plesk Installer affects version 3.27.0.0. A local attacker could execute arbitrary code by injecting DLL files into the same folder where the application is installed, resulting in DLL hijacking in edputil.dll, samlib.dll, urlmon.dll, sspicli.dll, propsys.dll and profapi.dll files.
End of life: 9/17/2024, Latest version: 18.0.62.2
End of life: 9/17/2024, Latest version: 18.0.62.2
End of life: 8/6/2024, Latest version: 18.0.61.6
End of life: 8/6/2024, Latest version: 18.0.61.6
End of life: 6/25/2024, Latest version: 18.0.60.1
End of life: 6/25/2024, Latest version: 18.0.60.1
End of life: 5/15/2024, Latest version: 18.0.59.2
End of life: 5/15/2024, Latest version: 18.0.59.2
End of life: 4/2/2024, Latest version: 18.0.58.2
End of life: 4/2/2024, Latest version: 18.0.58.2
End of life: 2/13/2024, Latest version: 18.0.57.5
End of life: 2/13/2024, Latest version: 18.0.57.5
End of life: 1/2/2024, Latest version: 18.0.56.4