CVE-2008-6241: Multiple SQL injection vulnerabilities in admin/usercheck.php in FlexPHPSite 0.0.1 and 0.0.7, when magic_quote

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MEDIUM 6.8DOWNGRADE

CVE-2008-6241 is a medium-severity flaw (CVSS 6.8) affecting flexphpsite. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple SQL injection vulnerabilities in admin/usercheck.php in FlexPHPSite 0.0.1 and 0.0.7, when magic_quotes_gpc is disabled, allow remote attackers to execute arbitrary SQL commands via (1) the checkuser parameter (aka username field), or (2) the checkpass parameter (aka password field), to admin/index.php.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	0.9% (top 39%)
CISA exploited list	No
Weakness	CWE-89
Published	2009-02-23
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: china-on-site

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

Am I affected?

Timeline

2009-02-23 15:30 UTCPublished CVE record published
2026-06-16 23:01 UTCUpdated Record last modified

china-on-site flexphpsite DOWNGRADE

Affected: 0.0.1 · 0.0.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.0.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.0.1 (Debian / Ubuntu)

apt-cache madison flexphpsite sudo apt install flexphpsite=<VERSION_BEFORE_0.0.1> sudo apt-mark hold flexphpsite

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

dnf --showduplicates list flexphpsite sudo dnf downgrade flexphpsite-<VERSION_BEFORE_0.0.1> sudo dnf versionlock add flexphpsite

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: Flexphpsite 0.0.1 - Authentication Bypass

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-2008-6241?

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

Is CVE-2008-6241 being exploited?

CVE-2008-6241 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-2008-6241 affect?

CVE-2008-6241 affects flexphpsite. Severity is medium (CVSS 6.8). Multiple SQL injection vulnerabilities in admin/usercheck.php in FlexPHPSite 0.0.1 and 0.0.7, when magic_quotes_gpc is disabled, allow remote attackers to execute arbitrary SQL commands via (1) the checkuser parameter (aka username field),

How urgent is CVE-2008-6241?

Priority 44/100. Public exploit reference

Software pages

PHP vulnerabilities

References

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