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TI-2021-20370 Aliases CVE-2021-45007GHSA-3hhp-w7c3-gjq2

Plesk 18.0.37 is affected by a Cross Site Request Forgery (CSRF) vulnerability that…

Priority MEDIUM 62CWE-352Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Tampering
Confidentiality · integrity · availability
None · High · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-352.

Summary

Plesk 18.0.37 is affected by a Cross Site Request Forgery (CSRF) vulnerability that allows an attacker to insert data on the user and admin panel. NOTE: the vendor states that this is only a site-specific problem on websites of one or more Plesk users

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00731 54th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:plesk:plesk:18.0.37:*:*:*:*:*:*:*18.0.37VulnerablePlesk
  • cpe:2.3:a:plesk:plesk:18.0.37:*:*:*:*:*:*:* Versions 18.0.37 Vulnerable ·Plesk

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-45007
  2. 2026-10-03 Alias added: GHSA-3hhp-w7c3-gjq2

References

Exploit 1

  • TI-2025-40863 Plesk 18.0 has Incorrect Access Control. CVSS 3.1CRITICAL 9.1
  • TI-2021-20371 Plesk CMS 18.0.37 is affected by an insecure permissions vulnerability that allows… CVSS 3.1HIGH 8.8
  • TI-2023-00785 Cross-Site Scripting (XSS) vulnerability in Plesk CVSS 3.1CRITICAL 9.0
  • TI-2023-04541 Uncontrolled search path in Plesk Installer CVSS 3.1HIGH 7.8

Sources

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