How severe is CVE-2004-2509?

CVE-2004-2509 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2004-2509 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-2509?

CVE-2004-2509 primarily affects Ubbcentral Ubb.threads. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2004-2509?

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

When was CVE-2004-2509 published?

CVE-2004-2509 was published on 2004-12-31 and last updated on 2026-06-16.

CVE-2004-2509

CVE-2004-2509 is a medium-severity vulnerability in Ubbcentral Ubb.threads with a CVSS 2.0 base score of 4.3. 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 4.3)
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ubbcentral Ubb.threads
Published: 2004-12-31
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerabilities in (1) calendar.php, (2) login.php, and (3) online.php in Infopop UBB.Threads 6.2.3 and 6.5 allow remote attackers to inject arbitrary web script or HTML via the Cat parameter.

Frequently asked questions

What is CVE-2004-2509?: Cross-site scripting (XSS) vulnerabilities in (1) calendar.php, (2) login.php, and (3) online.php in Infopop UBB.Threads 6.2.3 and 6.5 allow remote attackers to inject arbitrary web script or HTML via the Cat parameter.
How severe is CVE-2004-2509?: CVE-2004-2509 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2004-2509 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-2509?: CVE-2004-2509 primarily affects Ubbcentral Ubb.threads. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2004-2509?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2004-2509 published?: CVE-2004-2509 was published on 2004-12-31 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:ubbcentral:ubb.threads:6.2.3:*:*:*:*:*:*:*
cpe:2.3:a:ubbcentral:ubb.threads:6.5:*:*:*:*:*:*:*

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