CVE-2007-4543

CVE-2007-4543 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% (68th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-79
• Affected product: Mozilla Bugzilla
• Published: 2007-08-27
• Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in enter_bug.cgi in Bugzilla 2.17.1 through 2.20.4, 2.22.x before 2.22.3, and 3.x before 3.0.1 allows remote attackers to inject arbitrary web script or HTML via the buildid field in the "guided form."

Frequently asked questions

What is CVE-2007-4543?

Cross-site scripting (XSS) vulnerability in enter_bug.cgi in Bugzilla 2.17.1 through 2.20.4, 2.22.x before 2.22.3, and 3.x before 3.0.1 allows remote attackers to inject arbitrary web script or HTML via the buildid field in the "guided form."

How severe is CVE-2007-4543?

CVE-2007-4543 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2007-4543 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-4543?

CVE-2007-4543 primarily affects Mozilla Bugzilla. In total, 30 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-4543?

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

When was CVE-2007-4543 published?

CVE-2007-4543 was published on 2007-08-27 and last updated on 2026-06-16.

References

• http://osvdb.org/37201
• http://secunia.com/advisories/26584
• http://secunia.com/advisories/26971
• http://security.gentoo.org/glsa/glsa-200709-18.xml
• http://www.bugzilla.org/security/2.20.4/
• http://www.securityfocus.com/archive/1/477630/100/0/threaded
• http://www.securityfocus.com/bid/25425
• http://www.securitytracker.com/id?1018604
• http://www.vupen.com/english/advisories/2007/2977
• https://bugzilla.mozilla.org/show_bug.cgi?id=386942
• https://exchange.xforce.ibmcloud.com/vulnerabilities/36241

Affected products (30)

• cpe:2.3:a:mozilla:bugzilla:2.17.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.17.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.17.4:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.17.5:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.17.6:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.17.7:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.18:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.18:rc1:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.18:rc2:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.18:rc3:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.18.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.18.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.18.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.18.4:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.18.5:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.19:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.19.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.19.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.19.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.20:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.20:rc1:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.20:rc2:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.20.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.20.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.20.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.22:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.22:rc1:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.22.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:2.22.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:3.0.0:*:*:*:*:*:*:*

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