CVE-2003-1537: Directory traversal vulnerability in PostNuke 0.723 and earlier allows remote attackers to include arbitrary f

Q: How do I fix CVE-2003-1537?

postnuke: upgrade to newer than 0.723. Exact commands for each OS are on this page.

Q: Is CVE-2003-1537 being exploited?

CVE-2003-1537 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2003-1537 affect?

CVE-2003-1537 affects postnuke. Severity is medium (CVSS 5.0). Directory traversal vulnerability in PostNuke 0.723 and earlier allows remote attackers to include arbitrary files named theme.php via the theme parameter to index.php.

Q: How urgent is CVE-2003-1537?

Priority 40/100. Public exploit reference

This month

MEDIUM 5.0UPGRADE

CVE-2003-1537 is a medium-severity flaw (CVSS 5.0) affecting postnuke. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Directory traversal vulnerability in PostNuke 0.723 and earlier allows remote attackers to include arbitrary files named theme.php via the theme parameter to index.php.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Weakness	CWE-22
Published	2003-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: postnuke software foundation

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

Am I affected?

Timeline

2003-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:04 UTCUpdated Record last modified

postnuke software foundation postnuke UPGRADE

Affected: <= 0.723

Fixed in: newer than 0.723

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 0.723 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade postnuke

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade postnuke

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2003-1537?

postnuke: upgrade to newer than 0.723. Exact commands for each OS are on this page.

Is CVE-2003-1537 being exploited?

CVE-2003-1537 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-2003-1537 affect?

CVE-2003-1537 affects postnuke. Severity is medium (CVSS 5.0). Directory traversal vulnerability in PostNuke 0.723 and earlier allows remote attackers to include arbitrary files named theme.php via the theme parameter to index.php.

How urgent is CVE-2003-1537?

Priority 40/100. Public exploit reference

Software pages

PHP vulnerabilities

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References

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