How severe is CVE-2011-0537?

CVE-2011-0537 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2011-0537 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-0537?

CVE-2011-0537 primarily affects Mediawiki. In total, 54 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-0537?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2011-0537 published?

CVE-2011-0537 was published on 2011-02-04 and last updated on 2026-06-16.

CVE-2011-0537

CVE-2011-0537 is a high-severity vulnerability in Mediawiki with a CVSS 2.0 base score of 7.5. 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-22.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Mediawiki
Published: 2011-02-04
Last modified: 2026-06-16

Description

Multiple directory traversal vulnerabilities in (1) languages/Language.php and (2) includes/StubObject.php in MediaWiki 1.8.0 and other versions before 1.16.2, when running on Windows and possibly Novell Netware, allow remote attackers to include and execute arbitrary local PHP files via vectors related to a crafted language file and the Language::factory function.

Frequently asked questions

What is CVE-2011-0537?: Multiple directory traversal vulnerabilities in (1) languages/Language.php and (2) includes/StubObject.php in MediaWiki 1.8.0 and other versions before 1.16.2, when running on Windows and possibly Novell Netware, allow remote attackers to include and execute arbitrary local PHP files via vectors related to a crafted language file and the Language::factory function.
How severe is CVE-2011-0537?: CVE-2011-0537 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2011-0537 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-0537?: CVE-2011-0537 primarily affects Mediawiki. In total, 54 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-0537?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2011-0537 published?: CVE-2011-0537 was published on 2011-02-04 and last updated on 2026-06-16.

References

Affected products (54)

cpe:2.3:a:mediawiki:mediawiki:1.8.0:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.8.1:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.8.2:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.8.3:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.8.4:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.8.5:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.9.0:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.9.0:rc2:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.9.1:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.9.2:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.9.3:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.9.4:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.9.5:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.9.6:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.10.0:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.10.0:rc1:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.10.0:rc2:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.10.1:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.10.2:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.10.3:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.10.4:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.11:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.11:rc1:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.11.0:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.11.0:rc1:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.11.0rc1:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.11.1:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.11.2:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.11_development:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.12.0:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.12.0:rc1:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.12.1:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.12.2:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.12.3:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.12.4:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.13.0:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.13.0:rc1:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.13.0:rc2:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.13.1:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.13.2:*:*:*:*:*:*:*

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