CVE-2025-8459: Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in C

Routine

HIGH 7.7UPGRADE

CVE-2025-8459 is a high-severity flaw (CVSS 7.7) affecting centreon web. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Centreon Infra Monitoring (Monitoring recurrent downtime scheduler modules) allows Stored XSS.This issue affects Infra Monitoring: from 24.10.0 before 24.10.13, from 24.04.0 before 24.04.18, from 23.10.0 before 23.10.28.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.7 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 84%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-10-14
Last modified	2026-10-08

Publisher (CNA): Centreon · Vendor: centreon

Last updated 2026-10-08 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-10-14 18:15 UTCPublished CVE record published
2026-10-08 12:10 UTCUpdated Record last modified

centreon centreon web UPGRADE

Affected: >= 23.10.0 and < 23.10.28 · >= 24.04.0 and < 24.04.18 · >= 24.10.0 and < 24.10.13

Fixed in: 23.10.28, 24.04.18, 24.10.13

Safe to downgrade to: a release before 23.10.0

1. Check installed version

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

2. UPGRADE to 23.10.28 (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 23.10.0 (Debian / Ubuntu)

apt-cache madison centreon-web sudo apt install centreon-web=<VERSION_BEFORE_23.10.0> 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_23.10.0> 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-2025-8459?

centreon web: upgrade to 23.10.28, 24.04.18, 24.10.13. Exact commands for each OS are on this page.

Is CVE-2025-8459 being exploited?

CVE-2025-8459 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-2025-8459 affect?

CVE-2025-8459 affects centreon web. Severity is high (CVSS 7.7). Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Centreon Infra Monitoring (Monitoring recurrent downtime scheduler modules) allows Stored XSS.This issue affects Infra Monitoring:

How urgent is CVE-2025-8459?

Priority 31/100. High severity

Related CVEs

CVE-2025-54890 MEDIUM 6.8 UPGRADE Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in C
CVE-2025-5946 HIGH 7.2 UPGRADE Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Ce
CVE-2025-54889 MEDIUM 6.8 UPGRADE Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in C
CVE-2025-54891 MEDIUM 6.8 UPGRADE Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in C
CVE-2025-54892 MEDIUM 6.8 UPGRADE Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in C

References

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