CVE-2018-18838: An issue was discovered in Netdata 1.10.0

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HIGH 7.5REMOTEDOWNGRADE

CVE-2018-18838 is a high-severity flaw (CVSS 7.5) affecting netdata. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.2% (top 18%)
CISA exploited list	No
Weakness	CWE-116
Published	2019-06-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: my-netdata

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-06-18 16:15 UTCPublished CVE record published
2026-06-17 01:48 UTCUpdated Record last modified

my-netdata netdata DOWNGRADE

Affected: 1.10.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.10.0

1. Check installed version

apt-cache policy netdata || rpm -q netdata || netdata --version

2. No fixed release: DOWNGRADE to a release before 1.10.0 (Debian / Ubuntu)

apt-cache madison netdata sudo apt install netdata=<VERSION_BEFORE_1.10.0> sudo apt-mark hold netdata

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list netdata sudo dnf downgrade netdata-<VERSION_BEFORE_1.10.0> sudo dnf versionlock add netdata

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-18838?

netdata: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-18838 being exploited?

CVE-2018-18838 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-18838 affect?

CVE-2018-18838 affects netdata. Severity is high (CVSS 7.5). 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.

How urgent is CVE-2018-18838?

Priority 57/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

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References

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