Is CVE-2007-2976 being actively exploited?

CVE-2007-2976 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2007-2976?

CVE-2007-2976 has a CVSS 2.0 base score of 4.3 (MEDIUM).

CVE-2007-2976

MEDIUM · CVSS 4.3EPSS 1.0%EU EUVD

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.

Key facts

CVSS score: 4.3 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:M/Au:N/C:N/I:P/A:N
EPSS score: 1.0% (64th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2007-2968)
Published: June 1, 2007
NVD last modified: June 16, 2026
Status: Analyzed

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2007-2968 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

opentext / firstclass
opentext / server and internet services

References

http://osvdb.org/36415(Broken Link)
http://secunia.com/advisories/25447(Vendor Advisory)
http://www.securityfocus.com/bid/24204(Broken Link)
https://exchange.xforce.ibmcloud.com/vulnerabilities/34534(Third Party Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

Query CVEs from your AI assistant

The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.

Add the CVE brain