Is CVE-2011-4361 in the CISA KEV catalog?

No. CVE-2011-4361 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-4361?

CVE-2011-4361 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2011-4361?

CVE-2011-4361 has an EPSS score of 2.62% (84th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2011-4361?

Upgrade mediawiki on debian 11 to 1:1.15.5-4 or later.

CVE & CISA-KEV Catalog

CVE-2011-4361

MEDIUMEPSS 84th pctl

5.0

CVSS v2

NVD

Description

MediaWiki before 1.17.1 does not check for read permission before handling action=ajax requests, which allows remote attackers to obtain sensitive information by (1) leveraging the SpecialUpload::ajaxGetExistsWarning function, or by (2) leveraging an extension, as demonstrated by the CategoryTree, ExtTab, and InlineEditor extensions.

CWE-276

How to fix

Remediation Available

mediawikiDebian

Fixed in:1:1.15.5-4CVE-2011-4361

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

2.62%probability of exploitation in 30 days

84thpercentile

Elevated risk: more likely to be exploited than 84% of all known CVEs.

References

Patch2

Third-Party Advisory4

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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.