CVE-2006-6581: PHP remote file inclusion vulnerability in tests/debug_test.php in Vernet Loic PHP_Debug 1.1.0 allows remote a

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HIGH 7.5DOWNGRADE

CVE-2006-6581 is a high-severity flaw (CVSS 7.5) affecting php debug. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PHP remote file inclusion vulnerability in tests/debug_test.php in Vernet Loic PHP_Debug 1.1.0 allows remote attackers to execute arbitrary PHP code via a URL in the debugClassLocation parameter.

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	3.6% (top 11%)
CISA exploited list	No
Weakness	CWE-20
Published	2006-12-15
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: vernet loic

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

Am I affected?

Timeline

2006-12-15 19:28 UTCPublished CVE record published
2026-06-16 22:33 UTCUpdated Record last modified

vernet loic php debug DOWNGRADE

Affected: 1.1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1.0

1. Check installed version

apt-cache policy php-debug || rpm -q php-debug || php-debug --version

2. No fixed release: DOWNGRADE to a release before 1.1.0 (Debian / Ubuntu)

apt-cache madison php-debug sudo apt install php-debug=<VERSION_BEFORE_1.1.0> sudo apt-mark hold php-debug

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

dnf --showduplicates list php-debug sudo dnf downgrade php-debug-<VERSION_BEFORE_1.1.0> sudo dnf versionlock add php-debug

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: PHPdebug 1.1 - 'Debug_test.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-2006-6581?

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

Is CVE-2006-6581 being exploited?

CVE-2006-6581 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-2006-6581 affect?

CVE-2006-6581 affects php debug. Severity is high (CVSS 7.5). PHP remote file inclusion vulnerability in tests/debug_test.php in Vernet Loic PHP_Debug 1.1.0 allows remote attackers to execute arbitrary PHP code via a URL in the debugClassLocation parameter.

How urgent is CVE-2006-6581?

Priority 54/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

References

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