# CVE-2026-44962 — WebPros Plesk

> As of 2026-08-14, CVE-2026-44962 is a CRITICAL-severity vulnerability in WebPros Plesk, CVSS v3.1 9.9, EPSS 0.5% (44.4th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-44962, most recently “Plesk Obsidian CVE-2026-44962 — Authenticated XPath Injection to OS Command Execution in APS Application Catalog (CVSS 9.9)”.

**Last updated:** 2026-08-14

## What is CVE-2026-44962?

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.

The record classifies CVE-2026-44962 under weakness class [CWE-643](https://cwe.mitre.org/data/definitions/643.html). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 134 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 9.9 — CRITICAL (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`)
- **EPSS (FIRST):** 0.5% probability of exploitation in the next 30 days, higher than 44.4% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 6.7/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-05-29, last modified 2026-08-14

## Is CVE-2026-44962 being exploited?

It currently carries a trending score of 16 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [WebPros](https://intel.threadlinqs.com/vendors/webpros): Plesk

## How to fix CVE-2026-44962

No vendor patch reference has been recorded for CVE-2026-44962 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-44962

1 tracked threat in the Threadlinqs corpus references CVE-2026-44962, either in the campaign’s CVE list or as an indicator on the campaign record.

- [Plesk Obsidian CVE-2026-44962 — Authenticated XPath Injection to OS Command Execution in APS Application Catalog (CVSS 9.9)](https://intel.threadlinqs.com/threat/TL-2026-0645) — CRITICAL · 2026-06-01

## Sources

Enriched from CVE.org, FIRST EPSS. Last verified by Threadlinqs on 2026-10-10.

**Other references**

- [support.plesk.com](https://support.plesk.com/hc/en-us/articles/38633651286679-Vulnerability-CVE-2026-44962-in-Plesk-s-APS-Catalog)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-44962
Full detection coverage and IOCs for threats exploiting CVE-2026-44962 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp