What is CVE-2017-17089?

CVE-2017-17089 is a medium-severity vulnerability in Webmin, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2017-12-30.

How severe is CVE-2017-17089?

Medium severity. CVSS v3 base score is 4.8 out of 10.

XSS in Webmin

CVE-2017-17089

custom/run.cgi in Webmin before 1.870 allows remote authenticated administrators to conduct XSS attacks via the description field in the custom command functionality.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2017-12-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.008 (56.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.2% 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

Webmin

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.securityfocus.com/bid/102339 (VDB Entry, Third Party Advisory, vdb-entry)
github.com/webmin/webmin/commit/a9c97eea6c268fb83d93a817d58bac75e0d2599e (Patch, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2017-17089?: CVE-2017-17089 is a medium-severity vulnerability in Webmin, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2017-12-30.
How severe is CVE-2017-17089?: Medium severity. CVSS v3 base score is 4.8 out of 10.