How severe is CVE-2012-4189?

CVE-2012-4189 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2012-4189 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-2012-4189?

CVE-2012-4189 primarily affects Mozilla Bugzilla. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-4189?

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

When was CVE-2012-4189 published?

CVE-2012-4189 was published on 2012-11-16 and last updated on 2026-06-16.

CVE-2012-4189

CVE-2012-4189 is a medium-severity vulnerability in Mozilla Bugzilla 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. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Mozilla Bugzilla
Published: 2012-11-16
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in Bugzilla 4.1.x and 4.2.x before 4.2.4, and 4.3.x and 4.4.x before 4.4rc1, allows remote attackers to inject arbitrary web script or HTML via a field value that is not properly handled during construction of a tabular report, as demonstrated by the Version field.

Frequently asked questions

What is CVE-2012-4189?: Cross-site scripting (XSS) vulnerability in Bugzilla 4.1.x and 4.2.x before 4.2.4, and 4.3.x and 4.4.x before 4.4rc1, allows remote attackers to inject arbitrary web script or HTML via a field value that is not properly handled during construction of a tabular report, as demonstrated by the Version field.
How severe is CVE-2012-4189?: CVE-2012-4189 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2012-4189 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-2012-4189?: CVE-2012-4189 primarily affects Mozilla Bugzilla. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-4189?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-4189 published?: CVE-2012-4189 was published on 2012-11-16 and last updated on 2026-06-16.

References

Affected products (14)

cpe:2.3:a:mozilla:bugzilla:4.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.1.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.1.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.1.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.2:rc1:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.2:rc2:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.2.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.2.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.2.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.3.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.3.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.3.3:*:*:*:*:*:*:*

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