CVE-2018-18839: An issue was discovered in Netdata 1.10.0

This month

MEDIUM 5.3REMOTEDOWNGRADE

CVE-2018-18839 is a medium-severity flaw (CVSS 5.3) 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. Full Path Disclosure (FPD) exists via api/v1/alarms. NOTE: the vendor says "is intentional.

Why this priority

Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.9% (top 21%)
CISA exploited list	No
Weakness	CWE-200
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-2018-18839?

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

Is CVE-2018-18839 being exploited?

CVE-2018-18839 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-2018-18839 affect?

CVE-2018-18839 affects netdata. Severity is medium (CVSS 5.3). An issue was discovered in Netdata 1.10.0. Full Path Disclosure (FPD) exists via api/v1/alarms. NOTE: the vendor says "is intentional.

How urgent is CVE-2018-18839?

Priority 43/100. Remotely exploitable, no login, no user action

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References

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