CVE-2024-57099: ClassCMS v4.8 has a code execution vulnerability

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2024-57099 is a critical-severity flaw (CVSS 9.8) affecting classcms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ClassCMS v4.8 has a code execution vulnerability. Attackers can exploit this vulnerability by constructing a payload in the classview parameter of the model management feature, allowing them to execute arbitrary code and potentially take control of the server.

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	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-94
Published	2025-02-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: classcms

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

Am I affected?

Timeline

2025-02-03 20:15 UTCPublished CVE record published
2026-06-17 08:13 UTCUpdated Record last modified

classcms classcms DOWNGRADE

Affected: 4.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.8

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.8 (Debian / Ubuntu)

apt-cache madison classcms sudo apt install classcms=<VERSION_BEFORE_4.8> sudo apt-mark hold classcms

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

dnf --showduplicates list classcms sudo dnf downgrade classcms-<VERSION_BEFORE_4.8> sudo dnf versionlock add classcms

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-2024-57099?

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

Is CVE-2024-57099 being exploited?

CVE-2024-57099 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-2024-57099 affect?

CVE-2024-57099 affects classcms. Severity is critical (CVSS 9.8). ClassCMS v4.8 has a code execution vulnerability. Attackers can exploit this vulnerability by constructing a payload in the classview parameter of the model management feature, allowing them to execute arbitrary code and potentially take co

How urgent is CVE-2024-57099?

Priority 58/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-8145 LOW 2.4 DOWNGRADE A vulnerability, which was classified as problematic, has been found in ClassCMS 4.8
CVE-2024-8144 LOW 3.5 DOWNGRADE A vulnerability classified as problematic was found in ClassCMS 4.8
CVE-2024-6932 LOW 3.5 DOWNGRADE A vulnerability was found in ClassCMS 4.5
CVE-2024-57097 MEDIUM 4.8 DOWNGRADE ClassCMS 4.8 is vulnerable to Cross Site Scripting (XSS) in class/admin/channel.php.
CVE-2024-48180 CRITICAL 9.8 UPGRADE ClassCMS <=4.8 is vulnerable to file inclusion in the nowView method in/class/cms/cms.php, which can include a

References

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