Plesk APS Application Catalog XPath Injection Leading to OS Command Execution
CVE-2026-44962 is a critical vulnerability in Plesk for Linux affecting the APS Application Catalog search functionality. The flaw is described as an XPath injection issue caused by improper sanitization of user-supplied input before it is interpolated into XPath queries. According to the provided content, an authenticated low-privileged user can exploit this weakness over the network, without user interaction, to manipulate the vulnerable query path and achieve arbitrary operating system command execution on the server. The resulting impact includes local privilege escalation and potential compromise of the underlying Linux host. Affected versions are Plesk for Linux prior to 18.0.75.1 and prior to 18.0.76.2.
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Impact, mitigation & remediation
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Impact
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Mitigation
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Remediation
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Exploits
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No public exploit code observed for this vulnerability.
Affected products & vendors
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
19 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability in Plesk's APS Catalog affecting Plesk for Linux versions prior to 18.0.75.1 and 18.0.76.2.
A critical authenticated command execution vulnerability in Plesk's APS Application Catalog component caused by an XPath injection flaw in the APS Catalog search functionality, allowing low-privileged users to escalate privileges and execute arbitrary OS commands.
A critical Plesk vulnerability affecting Linux installations in which an XPath injection in the APS Application Catalog search functionality allows an authenticated low-privileged user to execute arbitrary operating system commands and escalate privileges to administrative access.
An XPath injection vulnerability in Plesk APS Application Catalog search functionality that can allow an authenticated low-privileged user to execute arbitrary OS commands on the server and achieve local privilege escalation.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.