CVE-2009-4547: Multiple cross-site scripting (XSS) vulnerabilities in ViArt CMS 3.x allow remote attackers to inject arbitrar

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MEDIUM 4.3DOWNGRADE

CVE-2009-4547 is a medium-severity flaw (CVSS 4.3) affecting viart cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple cross-site scripting (XSS) vulnerabilities in ViArt CMS 3.x allow remote attackers to inject arbitrary web script or HTML via the (1) category_id parameter to forums.php, or the forum_id parameter to (2) forum.php or (3) forum_topic_new.php.

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	1.8% (top 21%)
CISA exploited list	No
Weakness	CWE-79
Published	2010-01-04
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: viart

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

Am I affected?

Timeline

2010-01-04 17:30 UTCPublished CVE record published
2026-06-16 23:13 UTCUpdated Record last modified

viart viart cms DOWNGRADE

Affected: 3.3.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.3.2

1. Check installed version

apt-cache policy viart-cms || rpm -q viart-cms || viart-cms --version

2. No fixed release: DOWNGRADE to a release before 3.3.2 (Debian / Ubuntu)

apt-cache madison viart-cms sudo apt install viart-cms=<VERSION_BEFORE_3.3.2> sudo apt-mark hold viart-cms

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

dnf --showduplicates list viart-cms sudo dnf downgrade viart-cms-<VERSION_BEFORE_3.3.2> sudo dnf versionlock add viart-cms

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: ViArt CMS - 'forum.php?forum_id' Cross-Site Scripting
Exploit-DB: ViArt CMS - 'forums.php?category_id' Cross-Site Scripting
Exploit-DB: ViArt CMS - 'forum_topic_new.php?forum_id' 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-2009-4547?

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

Is CVE-2009-4547 being exploited?

CVE-2009-4547 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-2009-4547 affect?

CVE-2009-4547 affects viart cms. Severity is medium (CVSS 4.3). Multiple cross-site scripting (XSS) vulnerabilities in ViArt CMS 3.x allow remote attackers to inject arbitrary web script or HTML via the (1) category_id parameter to forums.php, or the forum_id parameter to (2) forum.php or (3) forum_topi

How urgent is CVE-2009-4547?

Priority 40/100. Public exploit reference

Software pages

PHP vulnerabilities

References

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