What is CVE-2019-18793?

CVE-2019-18793 is a medium-severity vulnerability in Parallels Plesk Panel, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-11-13.

How severe is CVE-2019-18793?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Parallels Plesk Panel

CVE-2019-18793

Parallels Plesk Panel 9.5 allows XSS in target/locales/tr-TR/help/index.htm? via the "fileName" parameter.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2019-11-13 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.008 (54.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Parallels Plesk Panel — versions 9.5

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

packetstormsecurity.com/files/155175/Parallels-Plesk-Panel-9.5-Cross-Site-Scrip… (Exploit, VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2019-18793?: CVE-2019-18793 is a medium-severity vulnerability in Parallels Plesk Panel, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-11-13.
How severe is CVE-2019-18793?: Medium severity. CVSS v3 base score is 6.1 out of 10.