CVE-2005-4593: PHP remote file inclusion vulnerability in phpDocumentor 1.3.0 rc4 and earlier, when register_globals is enabl

This week

HIGH 7.5DOWNGRADE

CVE-2005-4593 is a high-severity flaw (CVSS 7.5) affecting phpdocumentor. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PHP remote file inclusion vulnerability in phpDocumentor 1.3.0 rc4 and earlier, when register_globals is enabled, allows remote attackers to execute arbitrary code via a URL in the (1) FORUM[LIB] parameter in Documentation/tests/bug-559668.php and (2) the root_dir parameter in docbuilder/file_dialog.php.

Why this priority

High severity
EPSS top 3%: 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	14.1% (top 3%)
CISA exploited list	No
Published	2005-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: joshua eichorn

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

Am I affected?

Timeline

2005-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:19 UTCUpdated Record last modified

joshua eichorn phpdocumentor DOWNGRADE

Affected: 1.2 · 1.2.1 · 1.2.2 · 1.2.3 · 1.3_rc3 · 1.3_rc4

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.2 (Debian / Ubuntu)

apt-cache madison phpdocumentor sudo apt install phpdocumentor=<VERSION_BEFORE_1.2> sudo apt-mark hold phpdocumentor

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

dnf --showduplicates list phpdocumentor sudo dnf downgrade phpdocumentor-<VERSION_BEFORE_1.2> sudo dnf versionlock add phpdocumentor

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: phpDocumentor 1.3.0 rc4 - Remote Command Execution

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-2005-4593?

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

Is CVE-2005-4593 being exploited?

CVE-2005-4593 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-2005-4593 affect?

CVE-2005-4593 affects phpdocumentor. Severity is high (CVSS 7.5). PHP remote file inclusion vulnerability in phpDocumentor 1.3.0 rc4 and earlier, when register_globals is enabled, allows remote attackers to execute arbitrary code via a URL in the (1) FORUM[LIB] parameter in Documentation/tests/bug-559668.

How urgent is CVE-2005-4593?

Priority 55/100. High severity; EPSS top 3%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

References

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