How severe is CVE-2007-3963?

CVE-2007-3963 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2007-3963 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-3963?

CVE-2007-3963 primarily affects Usebb. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-3963?

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

When was CVE-2007-3963 published?

CVE-2007-3963 was published on 2007-07-25 and last updated on 2026-06-16.

CVE-2007-3963

CVE-2007-3963 is a critical-severity vulnerability in Usebb with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Usebb
Published: 2007-07-25
Last modified: 2026-06-16

Description

Multiple cross-site scripting (XSS) vulnerabilities in UseBB 1.0.7, and possibly other 1.0.x versions, allow remote attackers to inject arbitrary web script or HTML via the PATH_INFO (PHP_SELF) to (1) upgrade-0-2-3.php, (2) upgrade-0-3.php, or (3) upgrade-0-4.php in install/, a different vulnerability than CVE-2005-4193.

Frequently asked questions

What is CVE-2007-3963?: Multiple cross-site scripting (XSS) vulnerabilities in UseBB 1.0.7, and possibly other 1.0.x versions, allow remote attackers to inject arbitrary web script or HTML via the PATH_INFO (PHP_SELF) to (1) upgrade-0-2-3.php, (2) upgrade-0-3.php, or (3) upgrade-0-4.php in install/, a different vulnerability than CVE-2005-4193.
How severe is CVE-2007-3963?: CVE-2007-3963 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2007-3963 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-3963?: CVE-2007-3963 primarily affects Usebb. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-3963?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2007-3963 published?: CVE-2007-3963 was published on 2007-07-25 and last updated on 2026-06-16.

References

Affected products (11)

cpe:2.3:a:usebb:usebb:1.0:*:*:*:*:*:*:*
cpe:2.3:a:usebb:usebb:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:usebb:usebb:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:usebb:usebb:1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:usebb:usebb:1.0.4:*:*:*:*:*:*:*
cpe:2.3:a:usebb:usebb:1.0.5:*:*:*:*:*:*:*
cpe:2.3:a:usebb:usebb:1.0.6:*:*:*:*:*:*:*
cpe:2.3:a:usebb:usebb:1.0.7:*:*:*:*:*:*:*
cpe:2.3:a:usebb:usebb:1.0_rc1:*:*:*:*:*:*:*
cpe:2.3:a:usebb:usebb:1.0_rc2:*:*:*:*:*:*:*
cpe:2.3:a:usebb:usebb:1.0_rc3:*:*:*:*:*:*:*

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