How severe is CVE-2007-4781?

CVE-2007-4781 has a CVSS 2.0 base score of 6.6, rated medium severity.

Is CVE-2007-4781 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-4781?

CVE-2007-4781 primarily affects Joomla. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-4781?

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

When was CVE-2007-4781 published?

CVE-2007-4781 was published on 2007-09-10 and last updated on 2026-06-16.

CVE-2007-4781

CVE-2007-4781 is a medium-severity vulnerability in Joomla with a CVSS 2.0 base score of 6.6. 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 6.6)
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Joomla
Published: 2007-09-10
Last modified: 2026-06-16

Description

administrator/index.php in the installer component (com_installer) in Joomla! 1.5 Beta1, Beta2, and RC1 allows remote authenticated administrators to upload arbitrary files to tmp/ via the "Upload Package File" functionality, which is accessible when com_installer is the value of the option parameter.

Frequently asked questions

What is CVE-2007-4781?: administrator/index.php in the installer component (com_installer) in Joomla! 1.5 Beta1, Beta2, and RC1 allows remote authenticated administrators to upload arbitrary files to tmp/ via the "Upload Package File" functionality, which is accessible when com_installer is the value of the option parameter.
How severe is CVE-2007-4781?: CVE-2007-4781 has a CVSS 2.0 base score of 6.6, rated medium severity.
Is CVE-2007-4781 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-4781?: CVE-2007-4781 primarily affects Joomla. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-4781?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-4781 published?: CVE-2007-4781 was published on 2007-09-10 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:a:joomla:joomla:1.5.0_beta1:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla:1.5.0_beta2:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla:1.5.0_rc1:*:*:*:*:*:*:*

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