What’s Vulnerable › Vulnerabilities

CVE-2019-18987

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-11-15 · updated 2026-06-17
• Weakness: CWE-200

Description

An issue was discovered in the AbuseFilter extension through 1.34 for MediaWiki. Once a specific abuse filter has (accidentally or otherwise) been made public, its previous versions can be exposed, thus potentially disclosing private or sensitive information within the filter's definition.

Affected products

• Wikimedia Foundation AbuseFilter: through 1.34

References

• https://gerrit.wikimedia.org/r/q/Ic12790bd33982473f77551bde9599ed083a3e1f1
• https://phabricator.wikimedia.org/T237887
• https://www.mediawiki.org/wiki/Extension:AbuseFilter
• https://gerrit.wikimedia.org/r/q/Ic12790bd33982473f77551bde9599ed083a3e1f1
• https://phabricator.wikimedia.org/T237887
• https://www.mediawiki.org/wiki/Extension:AbuseFilter

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