What is CVE-2018-1142?

CVE-2018-1142 is a medium-severity vulnerability in Tenable Appliance, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2018-03-28.

How severe is CVE-2018-1142?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Tenable Appliance

CVE-2018-1142

Tenable Appliance versions 4.6.1 and earlier have been found to contain a single XSS vulnerability. Utilizing a specially crafted request, an authenticated attacker could potentially execute arbitrary JavaScript code by manipulating certain URL parameters related to offline plugins.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-03-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (41.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 41.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: -0.000

Affected products

Tenable Appliance
Tenable Appliance — versions Tenable Appliance versions

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.tenable.com/security/tns-2018-02 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2018-1142?: CVE-2018-1142 is a medium-severity vulnerability in Tenable Appliance, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2018-03-28.
How severe is CVE-2018-1142?: Medium severity. CVSS v3 base score is 5.4 out of 10.