CVE-2018-16146: The web management console of Opsview Monitor 5.4.x before 5.4.2 provides functionality accessible by an authe

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HIGH 7.2UPGRADE

CVE-2018-16146 is a high-severity flaw (CVSS 7.2) affecting opsview. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The web management console of Opsview Monitor 5.4.x before 5.4.2 provides functionality accessible by an authenticated administrator to test notifications that are triggered under certain configurable events. The value parameter is not properly sanitized, leading to arbitrary command injection with the privileges of the nagios user account.

Why this priority

High severity
EPSS top 6%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	6.2% (top 6%)
CISA exploited list	No
Weakness	CWE-78
Published	2018-09-05
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: opsview

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

Am I affected?

Timeline

2018-09-05 21:29 UTCPublished CVE record published
2026-06-17 01:43 UTCUpdated Record last modified

opsview opsview UPGRADE

Affected: >= 5.4.0 and < 5.4.2

Fixed in: 5.4.2

Safe to downgrade to: a release before 5.4.0

1. Check installed version

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

2. UPGRADE to 5.4.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade opsview

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade opsview

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 5.4.0 (Debian / Ubuntu)

apt-cache madison opsview sudo apt install opsview=<VERSION_BEFORE_5.4.0> sudo apt-mark hold opsview

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list opsview sudo dnf downgrade opsview-<VERSION_BEFORE_5.4.0> sudo dnf versionlock add opsview

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-2018-16146?

opsview: upgrade to 5.4.2. Exact commands for each OS are on this page.

Is CVE-2018-16146 being exploited?

CVE-2018-16146 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-2018-16146 affect?

CVE-2018-16146 affects opsview. Severity is high (CVSS 7.2). The web management console of Opsview Monitor 5.4.x before 5.4.2 provides functionality accessible by an authenticated administrator to test notifications that are triggered under certain configurable events. The value parameter is not prop

How urgent is CVE-2018-16146?

Priority 54/100. High severity; EPSS top 6%: very likely to be exploited; Public exploit reference

Software pages

Nagios vulnerabilities

Related CVEs

CVE-2018-16148 MEDIUM 6.1 UPGRADE The diagnosticsb2ksy parameter of the /rest endpoint in Opsview Monitor before 5.3.1 and 5.4.x before 5.4.2 is
CVE-2018-16147 MEDIUM 6.1 UPGRADE The data parameter of the /settings/api/router endpoint in Opsview Monitor before 5.3.1 and 5.4.x before 5.4.2
CVE-2018-16145 HIGH 8.1 UPGRADE The /etc/init.d/opsview-reporting-module script that runs at boot time in Opsview Monitor before 5.3.1 and 5.4
CVE-2018-16144 CRITICAL 9.8 UPGRADE The test connection functionality in the NetAudit section of Opsview Monitor before 5.3.1 and 5.4.x before 5.4
CVE-2016-10368 MEDIUM 6.1 DOWNGRADE Open redirect vulnerability in Opsview Monitor Pro (Prior to 5.1.0.162300841, prior to 5.0.2.27475, prior to 4

References

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