How severe is CVE-2013-4307?

CVE-2013-4307 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2013-4307 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-4307?

CVE-2013-4307 primarily affects Mediawiki. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-4307?

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

When was CVE-2013-4307 published?

CVE-2013-4307 was published on 2013-09-12 and last updated on 2026-06-16.

CVE-2013-4307

CVE-2013-4307 is a medium-severity vulnerability in Mediawiki 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% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Mediawiki
Published: 2013-09-12
Last modified: 2026-06-16

Description

Multiple cross-site scripting (XSS) vulnerabilities in repo/includes/EntityView.php in the Wikibase extension for MediaWiki 1.19.x before 1.19.8, 1.20.x before 1.20.7, and 1.21.x before 1.21.2 allow (1) remote attackers to inject arbitrary web script or HTML via a label in the "In other languages" section or (2) remote administrators to inject arbitrary web script or HTML via a description.

Frequently asked questions

What is CVE-2013-4307?: Multiple cross-site scripting (XSS) vulnerabilities in repo/includes/EntityView.php in the Wikibase extension for MediaWiki 1.19.x before 1.19.8, 1.20.x before 1.20.7, and 1.21.x before 1.21.2 allow (1) remote attackers to inject arbitrary web script or HTML via a label in the "In other languages" section or (2) remote administrators to inject arbitrary web script or HTML via a description.
How severe is CVE-2013-4307?: CVE-2013-4307 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2013-4307 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-4307?: CVE-2013-4307 primarily affects Mediawiki. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-4307?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-4307 published?: CVE-2013-4307 was published on 2013-09-12 and last updated on 2026-06-16.

References

Affected products (20)

cpe:2.3:a:mediawiki:mediawiki:1.19:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.19:beta_1:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.19:beta_2:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.19.0:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.19.1:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.19.2:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.19.3:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.19.4:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.19.5:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.19.6:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.19.7:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.20:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.20.1:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.20.2:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.20.3:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.20.4:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.20.5:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.20.6:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.21:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.21.1:*:*:*:*:*:*:*

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