CVE-2006-5733: Directory traversal vulnerability in error.php in PostNuke 0.763 and earlier allows remote attackers to includ

Q: How do I fix CVE-2006-5733?

postnuke: upgrade to newer than 0.763. Exact commands for each OS are on this page.

Q: Is CVE-2006-5733 being exploited?

CVE-2006-5733 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-2006-5733 affect?

CVE-2006-5733 affects postnuke. Severity is high (CVSS 7.5). Directory traversal vulnerability in error.php in PostNuke 0.763 and earlier allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the PNSVlang (PNSV lang) cookie, as demonstrated by injecting PHP sequen

Q: How urgent is CVE-2006-5733?

Priority 53/100. High severity; Public exploit reference

This month

HIGH 7.5UPGRADE

CVE-2006-5733 is a high-severity flaw (CVSS 7.5) affecting postnuke. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Directory traversal vulnerability in error.php in PostNuke 0.763 and earlier allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the PNSVlang (PNSV lang) cookie, as demonstrated by injecting PHP sequences into an Apache HTTP Server log file, which is then included by error.php.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	3.0% (top 13%)
CISA exploited list	No
Published	2006-11-06
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

2006-11-06 18:07 UTCPublished CVE record published
2026-06-16 22:31 UTCUpdated Record last modified

postnuke software foundation postnuke UPGRADE

Affected: <= 0.763 · 0.762

Fixed in: newer than 0.763

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 0.763 (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.

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: PostNuke 0.763 - 'PNSV lang' Remote Code 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-2006-5733?

postnuke: upgrade to newer than 0.763. Exact commands for each OS are on this page.

Is CVE-2006-5733 being exploited?

CVE-2006-5733 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-2006-5733 affect?

CVE-2006-5733 affects postnuke. Severity is high (CVSS 7.5). Directory traversal vulnerability in error.php in PostNuke 0.763 and earlier allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the PNSVlang (PNSV lang) cookie, as demonstrated by injecting PHP sequen

How urgent is CVE-2006-5733?

Priority 53/100. High severity; Public exploit reference

Software pages

Apache HTTP Server vulnerabilities · PHP vulnerabilities

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References

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