CVE-2006-4918: Multiple PHP remote file inclusion vulnerabilities in Simple Discussion Board 0.1.0 allow remote attackers to

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HIGH 7.5DOWNGRADE

CVE-2006-4918 is a high-severity flaw (CVSS 7.5) affecting simple discussion board. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple PHP remote file inclusion vulnerabilities in Simple Discussion Board 0.1.0 allow remote attackers to execute arbitrary PHP code via a URL in the (1) env_dir parameter to (a) blank.php, (b) admin.php, or (c) builddb.php, and the (2) script_root parameter to blank.php.

Why this priority

High severity
EPSS top 5%: 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	8.0% (top 5%)
CISA exploited list	No
Published	2006-09-21
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: simple discussion board

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

Am I affected?

Timeline

2006-09-21 01:07 UTCPublished CVE record published
2026-06-16 22:30 UTCUpdated Record last modified

simple discussion board simple discussion board DOWNGRADE

Affected: 0.1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.1.0

1. Check installed version

apt-cache policy simple-discussion-board || rpm -q simple-discussion-board || simple-discussion-board --version

2. No fixed release: DOWNGRADE to a release before 0.1.0 (Debian / Ubuntu)

apt-cache madison simple-discussion-board sudo apt install simple-discussion-board=<VERSION_BEFORE_0.1.0> sudo apt-mark hold simple-discussion-board

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

dnf --showduplicates list simple-discussion-board sudo dnf downgrade simple-discussion-board-<VERSION_BEFORE_0.1.0> sudo dnf versionlock add simple-discussion-board

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: Simple Discussion Board 0.1.0 - 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-2006-4918?

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

Is CVE-2006-4918 being exploited?

CVE-2006-4918 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-2006-4918 affect?

CVE-2006-4918 affects simple discussion board. Severity is high (CVSS 7.5). Multiple PHP remote file inclusion vulnerabilities in Simple Discussion Board 0.1.0 allow remote attackers to execute arbitrary PHP code via a URL in the (1) env_dir parameter to (a) blank.php, (b) admin.php, or (c) builddb.php, and the (2)

How urgent is CVE-2006-4918?

Priority 55/100. High severity; EPSS top 5%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

References

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