CVE-2023-51633: Centreon sysName Cross-Site Scripting Remote Code Execution Vulnerability

This month

CRITICAL 9.6UPGRADE

CVE-2023-51633 is a critical-severity flaw (CVSS 9.6) affecting centreon web. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Centreon sysName Cross-Site Scripting Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Centreon. User interaction is required to exploit this vulnerability. The specific flaw exists within the processing of the sysName OID in SNMP. The issue results from the lack of proper validation of user-supplied data, which can lead to the injection of an arbitrary script.

Why this priority

Critical severity

A fixed release or distro patch exists.

Risk facts

CVSS score	9.6 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-05-03
Last modified	2026-06-17

Publisher (CNA): Zero Day Initiative · Vendor: centreon

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

Am I affected?

Timeline

2024-05-03 03:16 UTCPublished CVE record published
2026-06-17 06:41 UTCUpdated Record last modified

centreon centreon web UPGRADE

Affected: < 22.10.15 · >= 23.04.0 and < 23.04.10 · >= 23.10.0 and < 23.10.1

Fixed in: 22.10.15, 23.04.10, 23.10.1

Safe to downgrade to: a release before 23.04.0

1. Check installed version

apt-cache policy centreon-web || rpm -q centreon-web || centreon-web --version

2. UPGRADE to 22.10.15 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade centreon-web

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade centreon-web

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 23.04.0 (Debian / Ubuntu)

apt-cache madison centreon-web sudo apt install centreon-web=<VERSION_BEFORE_23.04.0> sudo apt-mark hold centreon-web

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

dnf --showduplicates list centreon-web sudo dnf downgrade centreon-web-<VERSION_BEFORE_23.04.0> sudo dnf versionlock add centreon-web

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-2023-51633?

centreon web: upgrade to 22.10.15, 23.04.10, 23.10.1. Exact commands for each OS are on this page.

Is CVE-2023-51633 being exploited?

CVE-2023-51633 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-2023-51633 affect?

CVE-2023-51633 affects centreon web. Severity is critical (CVSS 9.6). Centreon sysName Cross-Site Scripting Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Centreon. User interaction is required to exploit this vulnerabilit

How urgent is CVE-2023-51633?

Priority 50/100. Critical severity

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References

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