CVE-2026-44962: CWE-643 Improper Neutralization of Data within XPath Expressions ('XPath Injection') in WebPros Plesk
Plesk contains an XPath injection vulnerability in the APS Application Catalog search functionality, where user-supplied input is interpolated into XPath queries without proper sanitization. This allows an authenticated, low-privileged user to execute arbitrary operating system commands on the server, resulting in local privilege escalation.
AI Analysis
Technical Summary
CVE-2026-44962 is an XPath injection vulnerability in WebPros Plesk's APS Application Catalog search feature. User input is improperly neutralized before being used in XPath expressions, allowing an authenticated user with low privileges to execute arbitrary OS commands on the server. This results in local privilege escalation. The vulnerability affects Plesk versions 18.0.75.1 and 18.0.76.2. The CVSS v3.1 score is 9.9, indicating critical impact on confidentiality, integrity, and availability. No vendor advisory or patch information is currently available, and no known exploits in the wild have been reported.
Potential Impact
An authenticated user with low privileges can exploit this vulnerability to execute arbitrary operating system commands on the server, leading to local privilege escalation. This compromises the confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the APS Application Catalog search functionality to trusted users only and monitor for suspicious activity related to command execution attempts.
CVE-2026-44962: CWE-643 Improper Neutralization of Data within XPath Expressions ('XPath Injection') in WebPros Plesk
Description
Plesk contains an XPath injection vulnerability in the APS Application Catalog search functionality, where user-supplied input is interpolated into XPath queries without proper sanitization. This allows an authenticated, low-privileged user to execute arbitrary operating system commands on the server, resulting in local privilege escalation.
CVSS v3.1
Score 9.9critical
Affected software
WebPros
Plesk
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-44962 is an XPath injection vulnerability in WebPros Plesk's APS Application Catalog search feature. User input is improperly neutralized before being used in XPath expressions, allowing an authenticated user with low privileges to execute arbitrary OS commands on the server. This results in local privilege escalation. The vulnerability affects Plesk versions 18.0.75.1 and 18.0.76.2. The CVSS v3.1 score is 9.9, indicating critical impact on confidentiality, integrity, and availability. No vendor advisory or patch information is currently available, and no known exploits in the wild have been reported.
Potential Impact
An authenticated user with low privileges can exploit this vulnerability to execute arbitrary operating system commands on the server, leading to local privilege escalation. This compromises the confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the APS Application Catalog search functionality to trusted users only and monitor for suspicious activity related to command execution attempts.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- hackerone
- Date Reserved
- 2026-05-08T15:00:02.447Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a19bc67e29bf47b50f703b2
Added to database: 05/29/2026, 16:18:47 UTC
Last enriched: 08/14/2026, 16:44:30 UTC
Last updated: 09/11/2026, 22:06:33 UTC
Views: 164
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