Is CVE-2011-2976 being actively exploited?

CVE-2011-2976 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-2976?

CVE-2011-2976 has a CVSS 2.0 base score of 4.3 (MEDIUM).

CVE-2011-2976

MEDIUM · CVSS 4.3EPSS 1.4%EU EUVD

Cross-site scripting (XSS) vulnerability in Bugzilla 2.16rc1 through 2.22.7, 3.0.x through 3.3.x, and 3.4.x before 3.4.12 allows remote attackers to inject arbitrary web script or HTML via vectors involving a BUGLIST cookie.

Key facts

CVSS score: 4.3 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness (CWE): CWE-79
EPSS score: 1.4% (73th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-2944)
Published: August 9, 2011
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-2944 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

mozilla / bugzilla
mozilla / bugzilla
mozilla / bugzilla
mozilla / bugzilla
mozilla / bugzilla
mozilla / bugzilla
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mozilla / bugzilla
mozilla / bugzilla
mozilla / bugzilla
mozilla / bugzilla
mozilla / bugzilla
mozilla / bugzilla
mozilla / bugzilla
mozilla / bugzilla
mozilla / bugzilla

and 56 more…

References

http://secunia.com/advisories/45501(Vendor Advisory)
http://www.bugzilla.org/security/3.4.11/(Vendor Advisory)
http://www.osvdb.org/74303
http://www.securityfocus.com/bid/49042
https://bugzilla.mozilla.org/show_bug.cgi?id=660053(Patch)
https://exchange.xforce.ibmcloud.com/vulnerabilities/69038

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

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