How severe is CVE-2012-5883?

CVE-2012-5883 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2012-5883 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-5883?

CVE-2012-5883 primarily affects Mozilla Bugzilla. In total, 36 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-5883?

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

When was CVE-2012-5883 published?

CVE-2012-5883 was published on 2012-11-16 and last updated on 2026-06-16.

CVE-2012-5883

CVE-2012-5883 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: 2% (80th 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 the Flash component infrastructure in YUI 2.8.0 through 2.9.0, as used in Bugzilla 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, allows remote attackers to inject arbitrary web script or HTML via vectors related to swfstore.swf, a similar issue to CVE-2010-4209.

Frequently asked questions

What is CVE-2012-5883?: Cross-site scripting (XSS) vulnerability in the Flash component infrastructure in YUI 2.8.0 through 2.9.0, as used in Bugzilla 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, allows remote attackers to inject arbitrary web script or HTML via vectors related to swfstore.swf, a similar issue to CVE-2010-4209.
How severe is CVE-2012-5883?: CVE-2012-5883 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2012-5883 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-5883?: CVE-2012-5883 primarily affects Mozilla Bugzilla. In total, 36 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-5883?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-5883 published?: CVE-2012-5883 was published on 2012-11-16 and last updated on 2026-06-16.

References

Affected products (36)

cpe:2.3:a:mozilla:bugzilla:3.7:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.7.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.7.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:3.7.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.0:rc1:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.0:rc2:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.0.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.0.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.0.4:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.0.5:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.0.6:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.0.7:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:bugzilla:4.0.8:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*
cpe:2.3:a:yahoo:yui:2.8.0:*:*:*:*:*:*:*
cpe:2.3:a:yahoo:yui:2.8.1:*:*:*:*:*:*:*
cpe:2.3:a:yahoo:yui:2.8.1:pr1:*:*:*:*:*:*
cpe:2.3:a:yahoo:yui:2.8.2:*:*:*:*:*:*:*
cpe:2.3:a:yahoo:yui:2.9.0:*:*:*:*:*:*:*
cpe:2.3:a:yahoo:yui:2.9.0:pr2:*:*:*:*:*:*
cpe:2.3:a:yahoo:yui:2.9.0:pr4:*:*:*:*:*:*

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