CVE-2024-31666: An issue in flusity-CMS v.2.33 allows a remote attacker to execute arbitrary code via a crafted script to the

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2024-31666 is a critical-severity flaw (CVSS 9.8) affecting flusity. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue in flusity-CMS v.2.33 allows a remote attacker to execute arbitrary code via a crafted script to the edit_addon_post.php component.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Weakness	CWE-94
Published	2024-04-22
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: flusity

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

Am I affected?

Timeline

2024-04-22 18:15 UTCPublished CVE record published
2026-06-17 07:28 UTCUpdated Record last modified

flusity flusity DOWNGRADE

Affected: 2.33

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.33

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.33 (Debian / Ubuntu)

apt-cache madison flusity sudo apt install flusity=<VERSION_BEFORE_2.33> sudo apt-mark hold flusity

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list flusity sudo dnf downgrade flusity-<VERSION_BEFORE_2.33> sudo dnf versionlock add flusity

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-2024-31666?

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

Is CVE-2024-31666 being exploited?

CVE-2024-31666 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-2024-31666 affect?

CVE-2024-31666 affects flusity. Severity is critical (CVSS 9.8). An issue in flusity-CMS v.2.33 allows a remote attacker to execute arbitrary code via a crafted script to the edit_addon_post.php component.

How urgent is CVE-2024-31666?

Priority 64/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2024-33442 MEDIUM 4.3 DOWNGRADE An issue in flusity-CMS v.2.33 allows a remote attacker to execute arbitrary code via the add_post.php compone
CVE-2024-32418 CRITICAL 9.8 DOWNGRADE An issue in flusity CMS v2.33 allows a remote attacker to execute arbitrary code via the add_addon.php compone
CVE-2024-27757 MEDIUM 6.1 UPGRADE flusity CMS through 2.45 allows tools/addons_model.php Gallery Name XSS
CVE-2024-27680 MEDIUM 6.1 DOWNGRADE Flusity-CMS v2.33 is vulnerable to Cross Site Scripting (XSS) in the "Contact form."
CVE-2024-27668 MEDIUM 6.1 DOWNGRADE Flusity-CMS v2.33 is affected by: Cross Site Scripting (XSS) in 'Custom Blocks.'

References

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