How severe is CVE-2006-6721?

CVE-2006-6721 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2006-6721 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-6721?

CVE-2006-6721 affects Knusperleicht Shoutbox. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2006-6721?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2006-6721 published?

CVE-2006-6721 was published on 2006-12-23 and last updated on 2026-06-16.

CVE-2006-6721

CVE-2006-6721 is a medium-severity vulnerability in Knusperleicht Shoutbox with a CVSS 2.0 base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 6.8)
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Knusperleicht Shoutbox
Published: 2006-12-23
Last modified: 2026-06-16

Description

Multiple cross-site scripting (XSS) vulnerabilities in shout.php in Knusperleicht ShoutBox 2.6 allow remote attackers to inject arbitrary web script or HTML via the (1) sbNick or (2) sbKommentar parameter.

Frequently asked questions

What is CVE-2006-6721?: Multiple cross-site scripting (XSS) vulnerabilities in shout.php in Knusperleicht ShoutBox 2.6 allow remote attackers to inject arbitrary web script or HTML via the (1) sbNick or (2) sbKommentar parameter.
How severe is CVE-2006-6721?: CVE-2006-6721 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2006-6721 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-6721?: CVE-2006-6721 affects Knusperleicht Shoutbox. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-6721?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-6721 published?: CVE-2006-6721 was published on 2006-12-23 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:knusperleicht:shoutbox:2.6:*:*:*:*:*:*:*

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