CVE-2006-4279: SQL injection vulnerability in topic_post.php in XennoBB 2.2.1 and earlier allows remote attackers to execute

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HIGH 7.5DOWNGRADE

CVE-2006-4279 is a high-severity flaw (CVSS 7.5) affecting xennobb. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SQL injection vulnerability in topic_post.php in XennoBB 2.2.1 and earlier allows remote attackers to execute arbitrary SQL commands via the icon_topic 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	1.8% (top 21%)
CISA exploited list	No
Published	2006-08-21
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: xennobb

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

Am I affected?

Timeline

2006-08-21 22:04 UTCPublished CVE record published
2026-06-16 22:28 UTCUpdated Record last modified

xennobb xennobb DOWNGRADE

Affected: 1.0.5 · 1.0.6 · 2.1 · 2.2 · 2.2.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.5

1. Check installed version

apt-cache policy xennobb || rpm -q xennobb || xennobb --version

2. No fixed release: DOWNGRADE to a release before 1.0.5 (Debian / Ubuntu)

apt-cache madison xennobb sudo apt install xennobb=<VERSION_BEFORE_1.0.5> sudo apt-mark hold xennobb

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

dnf --showduplicates list xennobb sudo dnf downgrade xennobb-<VERSION_BEFORE_1.0.5> sudo dnf versionlock add xennobb

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: XennoBB 1.0.x/2.2 - Icon_Topic 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-2006-4279?

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

Is CVE-2006-4279 being exploited?

CVE-2006-4279 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-2006-4279 affect?

CVE-2006-4279 affects xennobb. Severity is high (CVSS 7.5). SQL injection vulnerability in topic_post.php in XennoBB 2.2.1 and earlier allows remote attackers to execute arbitrary SQL commands via the icon_topic parameter.

How urgent is CVE-2006-4279?

Priority 51/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2006-4161 MEDIUM 5.0 UPGRADE Directory traversal vulnerability in the avatar_gallery action in profile.php in XennoBB 2.1.0 and earlier all
CVE-2006-4025 HIGH 7.5 UPGRADE SQL injection vulnerability in profile.php in XennoBB 2.1.0 and earlier allows remote authenticated users to e
CVE-2006-3241 LOW 2.6 DOWNGRADE Cross-site scripting (XSS) vulnerability in messages.php in XennoBB 1.0.5 and earlier allows remote attackers

References

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