CVE-2008-6619: Unrestricted file upload vulnerability in class/ApplyDB.php in ClassSystem 2.3 allows remote attackers to exec

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MEDIUM 6.8DOWNGRADE

CVE-2008-6619 is a medium-severity flaw (CVSS 6.8) affecting classsystem. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unrestricted file upload vulnerability in class/ApplyDB.php in ClassSystem 2.3 allows remote attackers to execute arbitrary code by uploading a file with an executable extension, then accessing it via a direct request to the file in class/UploadHomepage/.

Why this priority

EPSS top 9%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	4.1% (top 9%)
CISA exploited list	No
Weakness	CWE-264
Published	2009-04-06
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: netlab

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2009-04-06 18:30 UTCPublished CVE record published
2026-06-16 23:02 UTCUpdated Record last modified

netlab classsystem DOWNGRADE

Affected: 2.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.3

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.3 (Debian / Ubuntu)

apt-cache madison classsystem sudo apt install classsystem=<VERSION_BEFORE_2.3> sudo apt-mark hold classsystem

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

dnf --showduplicates list classsystem sudo dnf downgrade classsystem-<VERSION_BEFORE_2.3> sudo dnf versionlock add classsystem

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: ClassSystem 2.0/2.3 - 'class/ApplyDB.php' Unrestricted Arbitrary File Upload / Arbitrary Code Execution

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-2008-6619?

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

Is CVE-2008-6619 being exploited?

CVE-2008-6619 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-2008-6619 affect?

CVE-2008-6619 affects classsystem. Severity is medium (CVSS 6.8). Unrestricted file upload vulnerability in class/ApplyDB.php in ClassSystem 2.3 allows remote attackers to execute arbitrary code by uploading a file with an executable extension, then accessing it via a direct request to the file in class/U

How urgent is CVE-2008-6619?

Priority 51/100. EPSS top 9%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2008-6618 HIGH 7.5 DOWNGRADE Multiple SQL injection vulnerabilities in ClassSystem 2.3 allow remote attackers to execute arbitrary SQL comm

References

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