How severe is CVE-2007-2976?

CVE-2007-2976 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2007-2976 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-2976?

CVE-2007-2976 primarily affects Opentext Firstclass. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-2976?

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

When was CVE-2007-2976 published?

CVE-2007-2976 was published on 2007-06-01 and last updated on 2026-06-16.

CVE-2007-2976

CVE-2007-2976 is a medium-severity vulnerability in Opentext Firstclass 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: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Opentext Firstclass
Published: 2007-06-01
Last modified: 2026-06-16

Description

Centrinity FirstClass 8.3 and earlier, and Server and Internet Services 8.0 and earlier, do not properly handle a URL with a null ("%00") character, which allows remote attackers to conduct cross-site scripting (XSS) attacks. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

Frequently asked questions

What is CVE-2007-2976?: Centrinity FirstClass 8.3 and earlier, and Server and Internet Services 8.0 and earlier, do not properly handle a URL with a null ("%00") character, which allows remote attackers to conduct cross-site scripting (XSS) attacks. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.
How severe is CVE-2007-2976?: CVE-2007-2976 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2007-2976 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-2976?: CVE-2007-2976 primarily affects Opentext Firstclass. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-2976?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-2976 published?: CVE-2007-2976 was published on 2007-06-01 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:opentext:firstclass:*:*:*:*:*:*:*:*
cpe:2.3:a:opentext:server_and_internet_services:*:*:*:*:*:*:*:*

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