CVE-2013-4568: n/a vulnerability

CVE-2013-4568: Incomplete blacklist vulnerability in Sanitizer::checkCss in MediaWiki before 1.19.9, 1.20.x before 1.20.8,...

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 certain non-ASCII characters in CSS, as demonstrated using variations of "expression" containing (1) full width characters or (2) IPA extensions, which are converted and rendered by Internet Explorer.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 16:45 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2013-4568 is a cross-site scripting flaw in MediaWiki's CSS sanitizer. Older MediaWiki versions may fail to block malicious CSS when certain non-ASCII characters are converted by Internet Explorer. Successful exploitation could run script in a visitor's browser in the wiki context. Exposure is most likely on legacy MediaWiki deployments that allow user-controlled content or styles and still serve users with Internet Explorer-compatible rendering paths. Prioritize remediation for internet-facing or broadly editable legacy MediaWiki sites. Business urgency is moderate because this is browser-side XSS, but affected software is old and should be upgraded or retired. Mitigation focus: Upgrade MediaWiki to 1.19.9, 1.20.8, 1.21.3, or later supported releases.; Review Debian, Fedora, and Wikimedia advisories for packaged update guidance.; Reduce exposure of untrusted wiki editing where legacy versions cannot be updated immediately..

Prepared: Jun 14, 2026, 15:13 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Dec 13, 2013, 18:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://bugzilla.wikimedia.org/attachment.cgi?id=13452&action=diffCVE reference · x_refsource_MISC
https://bugzilla.wikimedia.org/show_bug.cgi?id=55332CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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