CVE-2005-4311: Cross-site scripting (XSS) vulnerability in DCForum 6.25 and earlier, and possibly DCForum+ 1.x, allows remote

Routine

MEDIUM 4.3DOWNGRADEDOWNGRADE

CVE-2005-4311 is a medium-severity flaw (CVSS 4.3) affecting dcforum, dcforum\+. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in DCForum 6.25 and earlier, and possibly DCForum+ 1.x, allows remote attackers to inject arbitrary web script or HTML via (1) the page parameter in dcboard.php and (2) unspecified search parameters.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Published	2005-12-17
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: dcscripts

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

Am I affected?

Timeline

2005-12-17 00:03 UTCPublished CVE record published
2026-06-16 22:18 UTCUpdated Record last modified

dcscripts dcforum DOWNGRADE

Affected: 2k_1.1 · 5.11 · 6.0 · 6.1 · 6.2 · 6.21 · 6.22 · 6.23

Fixed in: no fixed release known

Safe to downgrade to: a release before 2k_1.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2k_1.1 (Debian / Ubuntu)

apt-cache madison dcforum sudo apt install dcforum=<VERSION_BEFORE_2k_1.1> sudo apt-mark hold dcforum

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

dnf --showduplicates list dcforum sudo dnf downgrade dcforum-<VERSION_BEFORE_2k_1.1> sudo dnf versionlock add dcforum

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.

dcscripts dcforum\+ DOWNGRADE

Affected: 1.0 · 1.1 · 1.001 · 1.002 · 1.2 · 1.003

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy dcforum+ || rpm -q dcforum+ || dcforum+ --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison dcforum+ sudo apt install dcforum+=<VERSION_BEFORE_1.0> sudo apt-mark hold dcforum+

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

dnf --showduplicates list dcforum+ sudo dnf downgrade dcforum+-<VERSION_BEFORE_1.0> sudo dnf versionlock add dcforum+

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: DCForum 1-6 DCBoard Script - 'Page' Cross-Site Scripting

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-2005-4311?

dcforum: downgrade or apply the listed mitigation; dcforum\+: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2005-4311 being exploited?

CVE-2005-4311 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-2005-4311 affect?

CVE-2005-4311 affects dcforum, dcforum\+. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in DCForum 6.25 and earlier, and possibly DCForum+ 1.x, allows remote attackers to inject arbitrary web script or HTML via (1) the page parameter in dcboard.php and (2) unspecified search parameters.

How urgent is CVE-2005-4311?

Priority 39/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2002-0226 HIGH 7.5 DOWNGRADE retrieve_password.pl in DCForum 6.x and 2000 generates predictable new passwords based on a sessionID, which a
CVE-2001-0527 HIGH 10.0 DOWNGRADE DOWNGRADE DCScripts DCForum versions 2000 and earlier allow a remote attacker to gain additional privileges by inserting
CVE-2001-0437 MEDIUM 5.0 DOWNGRADE DOWNGRADE upload_file.pl in DCForum 2000 1.0 allows remote attackers to upload arbitrary files without authentication by
CVE-2001-0436 HIGH 7.5 DOWNGRADE DOWNGRADE dcboard.cgi in DCForum 2000 1.0 allows remote attackers to execute arbitrary commands by uploading a Perl prog
CVE-2000-1132 MEDIUM 6.4 DOWNGRADE DCForum cgforum.cgi CGI script allows remote attackers to read arbitrary files, and delete the program itself,

References

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