CVE-2011-1587: n/a vulnerability

CVE-2011-1587: Cross-site scripting (XSS) vulnerability in MediaWiki before 1.16.4, when Internet Explorer 6 or earlier is...

Cross-site scripting (XSS) vulnerability in MediaWiki before 1.16.4, when Internet Explorer 6 or earlier is used, allows remote attackers to inject arbitrary web script or HTML via an uploaded file accessed with a dangerous extension such as .html located before a ? (question mark) in a query string, in conjunction with a modified URI path that has a %2E sequence in place of the . (dot) character. NOTE: this vulnerability exists because of an incomplete fix for CVE-2011-1578.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 22:28 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2011-1587 is an old MediaWiki cross-site scripting issue affecting versions before 1.16.4 under Internet Explorer 6 or earlier. A crafted uploaded file URL could make a victim’s browser run attacker-controlled script. It is not listed in KEV, and the supplied sources do not show active exploitation. Exposure is mainly legacy: MediaWiki deployments below 1.16.4, file uploads enabled, and users accessing content with Internet Explorer 6 or earlier. Current exposure should be uncommon, but abandoned internal wikis, archived public wikis, or old distribution packages should be checked. Treat this as a legacy cleanup issue unless old MediaWiki systems remain internet-facing or business-critical. Patch or retire affected instances during normal vulnerability management, escalating only if an exposed pre-1.16.4 wiki is found. Mitigation focus: Upgrade MediaWiki to 1.16.4 or a vendor package containing the fix.; Review Debian, Wikimedia, or distribution-specific security guidance for supported update paths.; Retire or isolate unsupported MediaWiki instances that cannot be patched..

Prepared: Jun 24, 2026, 13:28 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: Apr 27, 2011, 00:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

0Timeline events

0ADP providers

2Source 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.redhat.com/show_bug.cgi?id=696360CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

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Weakness

CWE details

No CWE listed

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