How severe is CVE-2004-1423?

CVE-2004-1423 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2004-1423 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-1423?

CVE-2004-1423 primarily affects Php-calendar. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2004-1423?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2004-1423 published?

CVE-2004-1423 was published on 2004-12-31 and last updated on 2026-06-16.

CVE-2004-1423

CVE-2004-1423 is a high-severity vulnerability in Php-calendar with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 15% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 15% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Php-calendar
Published: 2004-12-31
Last modified: 2026-06-16

Description

Multiple PHP remote file inclusion vulnerabilities in Sean Proctor PHP-Calendar before 0.10.1, as used in Commonwealth of Massachusetts Virtual Law Office (VLO) and other products, allow remote attackers to execute arbitrary PHP code via a URL in the phpc_root_path parameter to (1) includes/calendar.php or (2) includes/setup.php.

Frequently asked questions

What is CVE-2004-1423?: Multiple PHP remote file inclusion vulnerabilities in Sean Proctor PHP-Calendar before 0.10.1, as used in Commonwealth of Massachusetts Virtual Law Office (VLO) and other products, allow remote attackers to execute arbitrary PHP code via a URL in the phpc_root_path parameter to (1) includes/calendar.php or (2) includes/setup.php.
How severe is CVE-2004-1423?: CVE-2004-1423 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2004-1423 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-1423?: CVE-2004-1423 primarily affects Php-calendar. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2004-1423?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2004-1423 published?: CVE-2004-1423 was published on 2004-12-31 and last updated on 2026-06-16.

References

Affected products (11)

cpe:2.3:a:php-calendar:php-calendar:*:*:*:*:*:*:*:*
cpe:2.3:a:php-calendar:php-calendar:0.1:*:*:*:*:*:*:*
cpe:2.3:a:php-calendar:php-calendar:0.2:*:*:*:*:*:*:*
cpe:2.3:a:php-calendar:php-calendar:0.3:*:*:*:*:*:*:*
cpe:2.3:a:php-calendar:php-calendar:0.4:*:*:*:*:*:*:*
cpe:2.3:a:php-calendar:php-calendar:0.5:*:*:*:*:*:*:*
cpe:2.3:a:php-calendar:php-calendar:0.6:*:*:*:*:*:*:*
cpe:2.3:a:php-calendar:php-calendar:0.7:*:*:*:*:*:*:*
cpe:2.3:a:php-calendar:php-calendar:0.8:*:*:*:*:*:*:*
cpe:2.3:a:php-calendar:php-calendar:0.9:*:*:*:*:*:*:*
cpe:2.3:a:php-calendar:php-calendar:0.9.1:*:*:*:*:*:*:*

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