How severe is CVE-2009-4589?

CVE-2009-4589 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2009-4589 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-4589?

CVE-2009-4589 primarily affects Mediawiki Mediawik. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-4589?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-4589 published?

CVE-2009-4589 was published on 2010-01-07 and last updated on 2026-06-16.

CVE-2009-4589

CVE-2009-4589 is a medium-severity vulnerability in Mediawiki Mediawik with a CVSS 2.0 base score of 4.3. 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-79.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Mediawiki Mediawik
Published: 2010-01-07
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in the Special:Block implementation in the getContribsLink function in SpecialBlockip.php in MediaWiki 1.14.0 and 1.15.0 allows remote attackers to inject arbitrary web script or HTML via the ip parameter.

Frequently asked questions

What is CVE-2009-4589?: Cross-site scripting (XSS) vulnerability in the Special:Block implementation in the getContribsLink function in SpecialBlockip.php in MediaWiki 1.14.0 and 1.15.0 allows remote attackers to inject arbitrary web script or HTML via the ip parameter.
How severe is CVE-2009-4589?: CVE-2009-4589 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2009-4589 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-4589?: CVE-2009-4589 primarily affects Mediawiki Mediawik. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-4589?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-4589 published?: CVE-2009-4589 was published on 2010-01-07 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:mediawiki:mediawik:i1.15.0:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.14.0:*:*:*:*:*:*:*

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