CVE-2008-1591: The pnVarPrepForStore function in PostNuke 0.764 and earlier skips input sanitization when magic_quotes_runtim

Q: How do I fix CVE-2008-1591?

postnuke: upgrade to newer than 0.764. Exact commands for each OS are on this page.

Q: Is CVE-2008-1591 being exploited?

CVE-2008-1591 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-2008-1591 affect?

CVE-2008-1591 affects postnuke. Severity is high (CVSS 7.5). The pnVarPrepForStore function in PostNuke 0.764 and earlier skips input sanitization when magic_quotes_runtime is enabled, which allows remote attackers to conduct SQL injection attacks and execute arbitrary SQL commands via input associat

Q: How urgent is CVE-2008-1591?

Priority 47/100. High severity; Public exploit reference

This month

HIGH 7.5UPGRADE

CVE-2008-1591 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.

The pnVarPrepForStore function in PostNuke 0.764 and earlier skips input sanitization when magic_quotes_runtime is enabled, which allows remote attackers to conduct SQL injection attacks and execute arbitrary SQL commands via input associated with server variables, as demonstrated by the CLIENT_IP HTTP header (HTTP_CLIENT_IP variable).

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	1.0% (top 38%)
CISA exploited list	No
Weakness	CWE-89
Published	2008-03-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: postnuke

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

Am I affected?

Timeline

2008-03-31 23:44 UTCPublished CVE record published
2026-06-16 22:52 UTCUpdated Record last modified

postnuke postnuke UPGRADE

Affected: <= 0.764

Fixed in: newer than 0.764

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 0.764 (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 0.764 - Blind SQL Injection

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-2008-1591?

postnuke: upgrade to newer than 0.764. Exact commands for each OS are on this page.

Is CVE-2008-1591 being exploited?

CVE-2008-1591 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-2008-1591 affect?

CVE-2008-1591 affects postnuke. Severity is high (CVSS 7.5). The pnVarPrepForStore function in PostNuke 0.764 and earlier skips input sanitization when magic_quotes_runtime is enabled, which allows remote attackers to conduct SQL injection attacks and execute arbitrary SQL commands via input associat

How urgent is CVE-2008-1591?

Priority 47/100. High severity; Public exploit reference

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References

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