What is CVE-2018-11650?

CVE-2018-11650 is a medium-severity vulnerability in Graylog, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-06-01.

How severe is CVE-2018-11650?

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

XSS in Graylog

CVE-2018-11650

Graylog before v2.4.4 has an XSS security issue with unescaped text in notifications, related to toastr and util/UserNotification.js.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-06-01 · 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: 0.008 (56.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.4% 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

Graylog

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/Graylog2/graylog2-server/pull/4727 (Patch, Third Party Advisory)
www.graylog.org/post/announcing-graylog-v2-4-4 (Release Notes)

Frequently asked questions

What is CVE-2018-11650?: CVE-2018-11650 is a medium-severity vulnerability in Graylog, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-06-01.
How severe is CVE-2018-11650?: Medium severity. CVSS v3 base score is 6.1 out of 10.