What is CVE-2018-18838?

CVE-2018-18838 is a high-severity vulnerability in My-Netdata Netdata, classified under Improper Encoding or Escaping of Output. CVSS score: 7.5/10. Published 2019-06-18.

How severe is CVE-2018-18838?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in My-Netdata Netdata

CVE-2018-18838

An issue was discovered in Netdata 1.10.0. Log Injection (or Log Forgery) exists via a %0a sequence in the url parameter to api/v1/registry.

Published 2019-06-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.022 (81.6th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000

Affected products

My-Netdata Netdata — versions 1.10.0

Weakness classification (CWE)

CWE-116 — Improper Encoding or Escaping of Output

References

github.com/netdata/netdata/commit/92327c9ec211bd1616315abcb255861b130b97ca (Patch, Third Party Advisory)
github.com/netdata/netdata/pull/4521 (Third Party Advisory)
www.red4sec.com/cve/netdata_log_injection.txt (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-18838?: CVE-2018-18838 is a high-severity vulnerability in My-Netdata Netdata, classified under Improper Encoding or Escaping of Output. CVSS score: 7.5/10. Published 2019-06-18.
How severe is CVE-2018-18838?: High severity. CVSS v3 base score is 7.5 out of 10.