CVE-2006-3994: SQL injection vulnerability in the u2u_send_recp function in u2u.inc.php in XMB (aka extreme message board) 1.

Q: How do I fix CVE-2006-3994?

xmb forum: upgrade to newer than 1.9.6_alpha. Exact commands for each OS are on this page.

Q: Is CVE-2006-3994 being exploited?

CVE-2006-3994 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-2006-3994 affect?

CVE-2006-3994 affects xmb forum. Severity is high (CVSS 7.5). SQL injection vulnerability in the u2u_send_recp function in u2u.inc.php in XMB (aka extreme message board) 1.9.6 Alpha and earlier allows remote attackers to execute arbitrary SQL commands via the u2uid parameter to u2u.php, which is direc

Q: How urgent is CVE-2006-3994?

Priority 54/100. High severity; EPSS top 10%: very likely to be exploited; Public exploit reference

This month

HIGH 7.5UPGRADE

CVE-2006-3994 is a high-severity flaw (CVSS 7.5) affecting xmb forum. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SQL injection vulnerability in the u2u_send_recp function in u2u.inc.php in XMB (aka extreme message board) 1.9.6 Alpha and earlier allows remote attackers to execute arbitrary SQL commands via the u2uid parameter to u2u.php, which is directly accessed from $_POST and bypasses the protection scheme.

Why this priority

High severity
EPSS top 10%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	3.8% (top 10%)
CISA exploited list	No
Published	2006-08-05
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: xmb software

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

Am I affected?

Timeline

2006-08-05 00:04 UTCPublished CVE record published
2026-06-16 22:28 UTCUpdated Record last modified

xmb software xmb forum UPGRADE

Affected: <= 1.9.6_alpha

Fixed in: newer than 1.9.6_alpha

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy xmb-forum || rpm -q xmb-forum || xmb-forum --version

2. UPGRADE to newer than 1.9.6_alpha (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade xmb-forum

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade xmb-forum

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: XMB 1.9.6 - 'mq=off' 'u2uid' 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-2006-3994?

xmb forum: upgrade to newer than 1.9.6_alpha. Exact commands for each OS are on this page.

Is CVE-2006-3994 being exploited?

CVE-2006-3994 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-2006-3994 affect?

CVE-2006-3994 affects xmb forum. Severity is high (CVSS 7.5). SQL injection vulnerability in the u2u_send_recp function in u2u.inc.php in XMB (aka extreme message board) 1.9.6 Alpha and earlier allows remote attackers to execute arbitrary SQL commands via the u2uid parameter to u2u.php, which is direc

How urgent is CVE-2006-3994?

Priority 54/100. High severity; EPSS top 10%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

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CVE-2006-0365 MEDIUM 4.3 MITIGATE Cross-site scripting (XSS) vulnerability in XMB (aka extreme message board) allows remote attackers to inject
CVE-2004-2588 MEDIUM 5.0 DOWNGRADE Intentional information leak in phpinfo.php in XMB (aka extreme message board) 1.9 beta (aka Nexus beta) allow
CVE-2002-0316 HIGH 7.5 DOWNGRADE Cross-site scripting vulnerability in eXtreme message board (XMB) 1.6x and earlier allows remote attackers to

References

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