CVE-2006-4073: Multiple PHP remote file inclusion vulnerabilities in Fabian Hainz phpCC Beta 4.2 allow remote attackers to ex

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HIGH 7.5DOWNGRADE

CVE-2006-4073 is a high-severity flaw (CVSS 7.5) affecting phpcc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple PHP remote file inclusion vulnerabilities in Fabian Hainz phpCC Beta 4.2 allow remote attackers to execute arbitrary PHP code via a URL in the base_dir parameter to (1) login.php, (2) reactivate.php, or (3) register.php.

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	3.2% (top 12%)
CISA exploited list	No
Published	2006-08-11
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: phpcc

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

Am I affected?

Timeline

2006-08-11 01:04 UTCPublished CVE record published
2026-06-16 22:28 UTCUpdated Record last modified

phpcc phpcc DOWNGRADE

Affected: beta_4.2

Fixed in: no fixed release known

Safe to downgrade to: a release before beta_4.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before beta_4.2 (Debian / Ubuntu)

apt-cache madison phpcc sudo apt install phpcc=<VERSION_BEFORE_beta_4.2> sudo apt-mark hold phpcc

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

dnf --showduplicates list phpcc sudo dnf downgrade phpcc-<VERSION_BEFORE_beta_4.2> sudo dnf versionlock add phpcc

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: phpCC 4.2 Beta - 'base_dir' 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-2006-4073?

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

Is CVE-2006-4073 being exploited?

CVE-2006-4073 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-2006-4073 affect?

CVE-2006-4073 affects phpcc. Severity is high (CVSS 7.5). Multiple PHP remote file inclusion vulnerabilities in Fabian Hainz phpCC Beta 4.2 allow remote attackers to execute arbitrary PHP code via a URL in the base_dir parameter to (1) login.php, (2) reactivate.php, or (3) register.php.

How urgent is CVE-2006-4073?

Priority 53/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2007-0985 HIGH 7.5 UPGRADE SQL injection vulnerability in nickpage.php in phpCC 4.2 beta and earlier allows remote attackers to execute a

References

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