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CVE-2005-2323: Multiple SQL injection vulnerabilities in Class-1 Forum 0.24.4 and 0.23.2, and Clever Copy with forums install

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This month
HIGH 7.5DOWNGRADEMITIGATE

CVE-2005-2323 is a high-severity flaw (CVSS 7.5) affecting class-1 forum, clever copy. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple SQL injection vulnerabilities in Class-1 Forum 0.24.4 and 0.23.2, and Clever Copy with forums installed, allow remote attackers to modify SQL statements via the (1) id parameter to viewattach.php, (2) viewuser_id parameter to users.php, or the (3) id or (4) forum parameter to viewforum.php.

Why this priority

  • High severity
  • Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score7.5 (High)
EPSS exploit chance2.7% (top 14%)
CISA exploited listNo
Published2005-07-19
Last modified2026-06-16
Publisher (CNA): MITRE · Vendor: class-1 · clever copy

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

Am I affected?

Timeline

class-1 class-1 forum DOWNGRADE
Affected: 0.23.2 · 0.24.4
Fixed in: no fixed release known
Safe to downgrade to: a release before 0.23.2
1. Check installed version
apt-cache policy class-1-forum || rpm -q class-1-forum || class-1-forum --version
2. No fixed release: DOWNGRADE to a release before 0.23.2 (Debian / Ubuntu)
apt-cache madison class-1-forum sudo apt install class-1-forum=<VERSION_BEFORE_0.23.2> sudo apt-mark hold class-1-forum
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list class-1-forum sudo dnf downgrade class-1-forum-<VERSION_BEFORE_0.23.2> sudo dnf versionlock add class-1-forum
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.
clever copy clever copy MITIGATE
Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy clever-copy || rpm -q clever-copy || clever-copy --version
No fixed or unaffected release known
Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

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-2005-2323?

class-1 forum: downgrade or apply the listed mitigation; clever copy: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2005-2323 being exploited?

CVE-2005-2323 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-2005-2323 affect?

CVE-2005-2323 affects class-1 forum, clever copy. Severity is high (CVSS 7.5). Multiple SQL injection vulnerabilities in Class-1 Forum 0.24.4 and 0.23.2, and Clever Copy with forums installed, allow remote attackers to modify SQL statements via the (1) id parameter to viewattach.php, (2) viewuser_id parameter to users

How urgent is CVE-2005-2323?

Priority 53/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

References

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