CVE-2018-16148: The diagnosticsb2ksy parameter of the /rest endpoint in Opsview Monitor before 5.3.1 and 5.4.x before 5.4.2 is

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MEDIUM 6.1UPGRADE

CVE-2018-16148 is a medium-severity flaw (CVSS 6.1) affecting opsview. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The diagnosticsb2ksy parameter of the /rest endpoint in Opsview Monitor before 5.3.1 and 5.4.x before 5.4.2 is vulnerable to Cross-Site Scripting.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Weakness	CWE-79
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: < 5.3.1 · >= 5.4.0 and < 5.4.2

Fixed in: 5.3.1, 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 5.3.1 (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-2018-16148?

opsview: upgrade to 5.3.1, 5.4.2. Exact commands for each OS are on this page.

Is CVE-2018-16148 being exploited?

CVE-2018-16148 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-2018-16148 affect?

CVE-2018-16148 affects opsview. Severity is medium (CVSS 6.1). The diagnosticsb2ksy parameter of the /rest endpoint in Opsview Monitor before 5.3.1 and 5.4.x before 5.4.2 is vulnerable to Cross-Site Scripting.

How urgent is CVE-2018-16148?

Priority 44/100. Public exploit reference

Related CVEs

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-2018-16146 HIGH 7.2 UPGRADE The web management console of Opsview Monitor 5.4.x before 5.4.2 provides functionality accessible by an authe
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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