CVE-2024-57097: ClassCMS 4.8 is vulnerable to Cross Site Scripting (XSS) in class/admin/channel.php.

Routine

MEDIUM 4.8DOWNGRADE

CVE-2024-57097 is a medium-severity flaw (CVSS 4.8) affecting classcms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ClassCMS 4.8 is vulnerable to Cross Site Scripting (XSS) in class/admin/channel.php.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.2% (top 85%)
CISA exploited list	No
Weakness	CWE-79
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-2024-57097?

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

Is CVE-2024-57097 being exploited?

CVE-2024-57097 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-2024-57097 affect?

CVE-2024-57097 affects classcms. Severity is medium (CVSS 4.8). ClassCMS 4.8 is vulnerable to Cross Site Scripting (XSS) in class/admin/channel.php.

How urgent is CVE-2024-57097?

Priority 25/100. Public exploit reference

Software pages

PHP vulnerabilities

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-2024-57099 CRITICAL 9.8 DOWNGRADE ClassCMS v4.8 has a code execution vulnerability
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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