CVE-2018-18836: An issue was discovered in Netdata 1.10.0

This month

MEDIUM 6.5DOWNGRADE

CVE-2018-18836 is a medium-severity flaw (CVSS 6.5) 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. JSON injection exists via the api/v1/data tqx parameter because of web_client_api_request_v1_data in web/api/web_api_v1.c.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	2.0% (top 20%)
CISA exploited list	No
Weakness	CWE-94
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 01:47 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-2018-18836?

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

Is CVE-2018-18836 being exploited?

CVE-2018-18836 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-2018-18836 affect?

CVE-2018-18836 affects netdata. Severity is medium (CVSS 6.5). An issue was discovered in Netdata 1.10.0. JSON injection exists via the api/v1/data tqx parameter because of web_client_api_request_v1_data in web/api/web_api_v1.c.

How urgent is CVE-2018-18836?

Priority 48/100. Public exploit reference

Related CVEs

CVE-2025-71385 MEDIUM 6.1 UPGRADE Netdata before 2.3.1 reflects the user-supplied love query parameter of the api/v2/ilove.svg and api/v3/ilove.
CVE-2023-22497 MEDIUM 6.5 UPGRADE Netdata is an open source option for real-time infrastructure monitoring and troubleshooting
CVE-2023-22496 HIGH 8.1 UPGRADE Netdata is an open source option for real-time infrastructure monitoring and troubleshooting
CVE-2019-9834 MEDIUM 6.1 UPGRADE The Netdata web application through 1.13.0 allows remote attackers to inject their own malicious HTML code int
CVE-2018-18839 MEDIUM 5.3 DOWNGRADE An issue was discovered in Netdata 1.10.0

References

← Back to latest CVEs