TI-2023-00785 Aliases CVE-2023-0829 GHSA-f96r-wmpc-994r

Cross-Site Scripting (XSS) vulnerability in Plesk

MEDIUM 42CWE-79Published 2023-09-20 · Updated 2024-09-24

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

Plesk 17.0 through 18.0.31 version, is vulnerable to a Cross-Site Scripting. A malicious subscription owner (either a customer or an additional user), can fully compromise the server if an administrator visits a certain page in Plesk related to the malicious subscription.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00662 51st percentileScored 2026-11-07

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
Plesk	Plesk	17.0 – 18.0.31	—	No fix listed	CNA

Plesk VendorPlesk Affected 17.0 – 18.0.31 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:plesk:plesk::::::::	17.0 – 18.0.31	Vulnerable	Plesk

cpe:2.3:a:plesk:plesk:*:*:*:*:*:*:*:* Versions 17.0 – 18.0.31 Vulnerable ·Plesk

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-0829
2026-10-03 Alias added: GHSA-f96r-wmpc-994r
2026-10-19 EPSS moved to the 50th–90th percentile

References

Advisory 1

https://www.incibe.es/en/incibe-cert/notices/aviso/cross-site-scripting-xss-vulnerability-plesk

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-2021-20371 Plesk CMS 18.0.37 is affected by an insecure permissions vulnerability that allows… CVSS 3.1HIGH 8.8
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