CVE-2006-5833: gbcms_php_files/up_loader.php GreenBeast CMS 1.3 does not require authentication to upload files, which allows

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HIGH 7.5DOWNGRADE

CVE-2006-5833 is a high-severity flaw (CVSS 7.5) affecting greenbeast cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

gbcms_php_files/up_loader.php GreenBeast CMS 1.3 does not require authentication to upload files, which allows remote attackers to cause a denial of service (disk consumption) and execute arbitrary code by uploading arbitrary files, such as executing PHP code via an uploaded PHP file.

Why this priority

High severity
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	7.5 (High)
EPSS exploit chance	4.2% (top 9%)
CISA exploited list	No
Published	2006-11-10
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: greenbeast cms

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

Am I affected?

Timeline

2006-11-10 01:07 UTCPublished CVE record published
2026-06-16 22:31 UTCUpdated Record last modified

greenbeast cms greenbeast cms DOWNGRADE

Affected: 1.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3

1. Check installed version

apt-cache policy greenbeast-cms || rpm -q greenbeast-cms || greenbeast-cms --version

2. No fixed release: DOWNGRADE to a release before 1.3 (Debian / Ubuntu)

apt-cache madison greenbeast-cms sudo apt install greenbeast-cms=<VERSION_BEFORE_1.3> sudo apt-mark hold greenbeast-cms

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

dnf --showduplicates list greenbeast-cms sudo dnf downgrade greenbeast-cms-<VERSION_BEFORE_1.3> sudo dnf versionlock add greenbeast-cms

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-2006-5833?

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

Is CVE-2006-5833 being exploited?

CVE-2006-5833 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-2006-5833 affect?

CVE-2006-5833 affects greenbeast cms. Severity is high (CVSS 7.5). gbcms_php_files/up_loader.php GreenBeast CMS 1.3 does not require authentication to upload files, which allows remote attackers to cause a denial of service (disk consumption) and execute arbitrary code by uploading arbitrary files, such as

How urgent is CVE-2006-5833?

Priority 54/100. High severity; EPSS top 9%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

References

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