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TI-2026-47681 Aliases CVE-2026-67394GHSA-2mjp-rg6q-cc58

OS command injection in WebPros Plesk

Priority MEDIUM 43CWE-78Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

A critical local privilege escalation via OS command injection vulnerability has been discovered in Plesk for Linux, affecting all versions from 18.0.34 before 18.0.79.9 and 18.0.80.5. The vulnerability allows a customer or reseller with shell access (or allowed to change their own shell access) to elevate privileges to the root account on the hosting server.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01287 70th percentileScored 2026-11-07
Fix Fixed Plesk (WebPros): 18.0.79.9, 18.0.80.5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
WebProsPlesk18.0.34 to before 18.0.79.9; 18.0.80 to before 18.0.80.518.0.79.9, 18.0.80.5Patch availableCNA
  • Plesk VendorWebPros Affected 18.0.34 to before 18.0.79.9; 18.0.80 to before 18.0.80.5 Fixed in 18.0.79.9, 18.0.80.5 Patch available CNA

Remediation

  • Fix · CNA Plesk (WebPros) Fixed in 18.0.79.9, 18.0.80.5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-67394
  2. 2026-10-03 Alias added: GHSA-2mjp-rg6q-cc58

References

Other 1

  • TI-2026-30342 WebPros cPanel and WHM Authentication Bypass via Login Flow KEVCVSS 4.0CRITICAL 9.3
  • TI-2026-46792 Eval injection in cPanel 11.138.0.0 and earlier allows remote authenticated users to execute arbitrary code as root. CVSS 4.0HIGH 8.7
  • TI-2025-40383 Plesk Obsidian versions 8.0.1 through 18.0.73 are vulnerable to a Denial of Service (DoS)… CVSS 3.1HIGH 7.5
  • TI-2026-23322 Incorrect privileges management and insufficient path filtering allow to read arbitrary… CVSS 3.1HIGH 8.6
  • TI-2026-47685 Deserialization of untrusted data in WebPros WHMCS CVSS 4.0CRITICAL 9.3
  • TI-2026-23317 Authorization bypass in WebPros Comet Backup CVSS 4.0CRITICAL 9.9
See all 50 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences