CVE-2010-4567

CVE-2010-4567 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

Description

Bugzilla before 3.2.10, 3.4.x before 3.4.10, 3.6.x before 3.6.4, and 4.0.x before 4.0rc2 does not properly handle whitespace preceding a (1) javascript: or (2) data: URI, which allows remote attackers to conduct cross-site scripting (XSS) attacks via the URL (aka bug_file_loc) field.

Frequently asked questions

What is CVE-2010-4567?
Bugzilla before 3.2.10, 3.4.x before 3.4.10, 3.6.x before 3.6.4, and 4.0.x before 4.0rc2 does not properly handle whitespace preceding a (1) javascript: or (2) data: URI, which allows remote attackers to conduct cross-site scripting (XSS) attacks via the URL (aka bug_file_loc) field.
How severe is CVE-2010-4567?
CVE-2010-4567 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2010-4567 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-4567?
CVE-2010-4567 primarily affects Mozilla Bugzilla. In total, 109 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-4567?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-4567 published?
CVE-2010-4567 was published on 2011-01-28 and last updated on 2026-06-16.

References

Affected products (109)

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