CVE-2006-5386: PHP remote file inclusion vulnerability in process.php in NuralStorm Webmail 0.98b and earlier, when register_

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HIGH 7.5DOWNGRADE

CVE-2006-5386 is a high-severity flaw (CVSS 7.5) affecting nuralstorm webmail. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PHP remote file inclusion vulnerability in process.php in NuralStorm Webmail 0.98b and earlier, when register_globals is enabled, allows remote attackers to execute arbitrary PHP code via a URL in the DEFAULT_SKIN parameter.

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	2.7% (top 14%)
CISA exploited list	No
Published	2006-10-18
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: nuralstorm

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

Am I affected?

Timeline

2006-10-18 19:07 UTCPublished CVE record published
2026-06-16 22:31 UTCUpdated Record last modified

nuralstorm nuralstorm webmail DOWNGRADE

Affected: 0.98b

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.98b

1. Check installed version

apt-cache policy nuralstorm-webmail || rpm -q nuralstorm-webmail || nuralstorm-webmail --version

2. No fixed release: DOWNGRADE to a release before 0.98b (Debian / Ubuntu)

apt-cache madison nuralstorm-webmail sudo apt install nuralstorm-webmail=<VERSION_BEFORE_0.98b> sudo apt-mark hold nuralstorm-webmail

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

dnf --showduplicates list nuralstorm-webmail sudo dnf downgrade nuralstorm-webmail-<VERSION_BEFORE_0.98b> sudo dnf versionlock add nuralstorm-webmail

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: NuralStorm Webmail 0.98b - 'process.php' 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-2006-5386?

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

Is CVE-2006-5386 being exploited?

CVE-2006-5386 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-2006-5386 affect?

CVE-2006-5386 affects nuralstorm webmail. Severity is high (CVSS 7.5). PHP remote file inclusion vulnerability in process.php in NuralStorm Webmail 0.98b and earlier, when register_globals is enabled, allows remote attackers to execute arbitrary PHP code via a URL in the DEFAULT_SKIN parameter.

How urgent is CVE-2006-5386?

Priority 53/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

References

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