Is CVE-2013-4567 in the CISA KEV catalog?

No. CVE-2013-4567 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2013-4567?

CVE-2013-4567 has a CVSS v2 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2013-4567?

CVE-2013-4567 has an EPSS score of 1.35% (68th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2013-4567?

Upgrade mediawiki on debian 11 to 1:1.19.8+dfsg-2.2 or later.

CVE & CISA-KEV Catalog

CVE-2013-4567

MEDIUM

4.3

CVSS v2

NVD

Description

Incomplete blacklist vulnerability in Sanitizer::checkCss in MediaWiki before 1.19.9, 1.20.x before 1.20.8, and 1.21.x before 1.21.3 allows remote attackers to conduct cross-site scripting (XSS) attacks via a \b (backspace) character in CSS.

How to fix

Remediation Available

mediawikiDebian

Fixed in:1:1.19.8+dfsg-2.2CVE-2013-4567

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

1.35%probability of exploitation in 30 days

68thpercentile

Moderate risk: more likely to be exploited than 68% of all known CVEs.

References

Other references7

Embed a live status badge for CVE-2013-4567

Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.