CVE-2008-6491: PHP remote file inclusion vulnerability in connexion.php in PHPGKit 0.9 allows remote attackers to execute arb

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HIGH 7.5DOWNGRADE

CVE-2008-6491 is a high-severity flaw (CVSS 7.5) affecting phpgkit. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PHP remote file inclusion vulnerability in connexion.php in PHPGKit 0.9 allows remote attackers to execute arbitrary PHP code via a URL in the DOCUMENT_ROOT parameter. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	2.3% (top 17%)
CISA exploited list	No
Weakness	CWE-94
Published	2009-03-19
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: denis moinel

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

Am I affected?

Timeline

2009-03-19 10:30 UTCPublished CVE record published
2026-06-16 23:02 UTCUpdated Record last modified

denis moinel phpgkit DOWNGRADE

Affected: 0.9

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.9

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.9 (Debian / Ubuntu)

apt-cache madison phpgkit sudo apt install phpgkit=<VERSION_BEFORE_0.9> sudo apt-mark hold phpgkit

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

dnf --showduplicates list phpgkit sudo dnf downgrade phpgkit-<VERSION_BEFORE_0.9> sudo dnf versionlock add phpgkit

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: PHPGKit 0.9 - 'connexion.php' Remote File Inclusion

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-2008-6491?

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

Is CVE-2008-6491 being exploited?

CVE-2008-6491 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-2008-6491 affect?

CVE-2008-6491 affects phpgkit. Severity is high (CVSS 7.5). PHP remote file inclusion vulnerability in connexion.php in PHPGKit 0.9 allows remote attackers to execute arbitrary PHP code via a URL in the DOCUMENT_ROOT parameter. NOTE: the provenance of this information is unknown; the details are ob

How urgent is CVE-2008-6491?

Priority 52/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

References

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