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Fencer Vulns
high 7.5

CVE-2018-18838 json

An issue was discovered in Netdata 1.10.0.

published 2019-06-18 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-10552

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.2%
EPSS 2.2% chance of exploitation in 30 days, percentile 82%
public exploits
0
none known

Summary

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.

Patch / fix

  • netdata Debian 12 1.11.1+dfsg-1

debian advisories DEBIAN-CVE-2018-18838

  • netdata Ubuntu Pro 18.04 LTS 1.9.0+dfsg-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2018-18838

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • netdata openSUSE Tumbleweed 1.31.0-1.3
  • netdata Package Hub 15 SP3, openSUSE Leap 15.3 1.31.0-bp153.2.3.1
  • netdata Package Hub 15 SP2 1.29.3-bp152.4.3.1
  • netdata openSUSE Leap 15.2 1.29.3-lp152.4.3.1

opensuse advisories openSUSE-SU-2024:11083-1openSUSE-SU-2021:1603-1openSUSE-SU-2021:0730-1openSUSE-SU-2021:0647-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-18838 updated cvss 5.4

netdata: log forgery via %0a sequence in url parameter to api/v1/registry

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.17% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • red4sec.com https://www.red4sec.com/cve/netdata_log_injection.txt referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-116 Improper Encoding or Escaping of Output

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.