How severe is CVE-2012-4199?

CVE-2012-4199 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2012-4199 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-4199?

CVE-2012-4199 primarily affects Mozilla Bugzilla. In total, 99 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-4199?

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

When was CVE-2012-4199 published?

CVE-2012-4199 was published on 2012-11-16 and last updated on 2026-06-16.

CVE-2012-4199

CVE-2012-4199 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-200.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Mozilla Bugzilla
Published: 2012-11-16
Last modified: 2026-06-16

Description

template/en/default/bug/field-events.js.tmpl in Bugzilla 3.x before 3.6.12, 3.7.x and 4.0.x before 4.0.9, 4.1.x and 4.2.x before 4.2.4, and 4.3.x and 4.4.x before 4.4rc1 generates JavaScript function calls containing private product names or private component names in certain circumstances involving custom-field visibility control, which allows remote attackers to obtain sensitive information by reading HTML source code.

Frequently asked questions

What is CVE-2012-4199?: template/en/default/bug/field-events.js.tmpl in Bugzilla 3.x before 3.6.12, 3.7.x and 4.0.x before 4.0.9, 4.1.x and 4.2.x before 4.2.4, and 4.3.x and 4.4.x before 4.4rc1 generates JavaScript function calls containing private product names or private component names in certain circumstances involving custom-field visibility control, which allows remote attackers to obtain sensitive information by reading HTML source code.
How severe is CVE-2012-4199?: CVE-2012-4199 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2012-4199 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-4199?: CVE-2012-4199 primarily affects Mozilla Bugzilla. In total, 99 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-4199?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-4199 published?: CVE-2012-4199 was published on 2012-11-16 and last updated on 2026-06-16.

References

Affected products (99)

cpe:2.3:a:mozilla:bugzilla:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.0:rc1:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.0.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.0.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.0.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.0.4:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.0.5:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.0.6:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.0.7:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.0.8:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.0.9:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.0.10:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.0.11:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.1.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.1.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.1.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.1.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.1.4:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.2:rc1:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.2:rc2:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.2.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.2.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.2.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.2.4:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.2.5:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.2.6:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.2.7:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.2.8:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.2.9:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.2.10:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.3.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.3.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.3.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.3.4:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.4:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.4:rc1:*:*:*:*:*:*

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