What is CVE-2018-8728?

CVE-2018-8728 is a medium-severity vulnerability in Kontena, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-03-15.

How severe is CVE-2018-8728?

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

XSS in Kontena

CVE-2018-8728

server/app/views/static/code.html in Kontena before 1.5.0 allows XSS in "kontena master login --remote" code display, as demonstrated by /code#code= in a URI.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-03-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.011 (63.7th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Kontena

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/kontena/kontena/pull/3223 (Third Party Advisory, Issue Tracking)
lgtm.com/projects/g/kontena/kontena/rev/06a7a06e65a5ef0dada14faee2ae20388b87c1fe (Patch)
github.com/kontena/kontena/releases/tag/v1.5.0 (Release Notes)

Frequently asked questions

What is CVE-2018-8728?: CVE-2018-8728 is a medium-severity vulnerability in Kontena, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-03-15.
How severe is CVE-2018-8728?: Medium severity. CVSS v3 base score is 6.1 out of 10.