How severe is CVE-2006-4466?

CVE-2006-4466 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2006-4466 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-4466?

CVE-2006-4466 primarily affects Joomla. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2006-4466?

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

When was CVE-2006-4466 published?

CVE-2006-4466 was published on 2006-08-31 and last updated on 2026-06-16.

CVE-2006-4466

CVE-2006-4466 is a medium-severity vulnerability in Joomla with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Joomla
Published: 2006-08-31
Last modified: 2026-06-16

Description

Joomla! before 1.0.11 does not properly unset variables when the input data includes a numeric parameter with a value matching an alphanumeric parameter's hash value, which allows remote attackers to have an unspecified impact. NOTE: it could be argued that this vulnerability is due to a bug in the unset PHP command (CVE-2006-3017) and the proper fix should be in PHP; if so, then this should not be treated as a vulnerability in Joomla!.

Frequently asked questions

What is CVE-2006-4466?: Joomla! before 1.0.11 does not properly unset variables when the input data includes a numeric parameter with a value matching an alphanumeric parameter's hash value, which allows remote attackers to have an unspecified impact. NOTE: it could be argued that this vulnerability is due to a bug in the unset PHP command (CVE-2006-3017) and the proper fix should be in PHP; if so, then this should not be treated as a vulnerability in Joomla!.
How severe is CVE-2006-4466?: CVE-2006-4466 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2006-4466 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-4466?: CVE-2006-4466 primarily affects Joomla. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-4466?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-4466 published?: CVE-2006-4466 was published on 2006-08-31 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:joomla:joomla:*:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla:1.0.9:*:*:*:*:*:*:*

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