XSS in Plesk Obsidian
CVE-2021-35976
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.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.011 (64.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Plesk Obsidian
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_MISC, Broken Link)
- cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-35976?
- CVE-2021-35976 is a medium-severity vulnerability in Plesk Obsidian, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-09-10.
- How severe is CVE-2021-35976?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2021-35976 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.