CVE-2021-35976

PoC —

CVSS 3.1

6.1 medium

EPSS

1%p65

Published

Sep 10, 2021 (Sep 10, 2021)

Modified

Jun 17, 2026

Description

The feature to preview a website in Plesk Obsidian 18.0.0 through 18.0.32 on Linux is vulnerable to reflected XSS via the /plesk-site-preview/ PATH, aka PFSI-62467. The attacker could execute JavaScript code in the victim's browser by using the link to preview sites hosted on the server. Authentication is not required to exploit the vulnerability.

Vendors: plesk
Products: obsidian
Weakness: CWE-79
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (1.1%)

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