TI-2021-20371 Aliases CVE-2021-45008 GHSA-84hm-26hq-gff5

Plesk CMS 18.0.37 is affected by an insecure permissions vulnerability that allows…

MEDIUM 44CWE-281Published 2022-02-21 · Updated 2024-08-04

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

Plesk CMS 18.0.37 is affected by an insecure permissions vulnerability that allows privilege Escalation from user to admin rights. OTE: the vendor states that this is only a site-specific problem on websites of one or more Plesk users

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01959 80th 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: 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

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:plesk:plesk:18.0.37:::::::*	18.0.37	Vulnerable	Plesk

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

2026-10-02 Threatist record created from CVE-2021-45008
2026-10-03 Alias added: GHSA-84hm-26hq-gff5

References

Exploit 1

https://github.com/AS4mir/CVE-2021-45008/blob/main/README.md

TI-2021-20370 Plesk 18.0.37 is affected by a Cross Site Request Forgery (CSRF) vulnerability that… CVSS 3.1MEDIUM 6.5
TI-2025-40863 Plesk 18.0 has Incorrect Access Control. CVSS 3.1CRITICAL 9.1
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