What’s Vulnerable › Vulnerabilities

CVE-2023-29139

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-03-31 · updated 2026-06-17
• Weakness: CWE-400

Description

An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. When a user with checkuserlog permissions makes many CheckUserLog API requests in some configurations, denial of service can occur (RequestTimeoutException or upstream request timeout).

Affected products

• Wikimedia Foundation MediaWiki: through 1.39.3

References

• https://phabricator.wikimedia.org/T326293
• https://phabricator.wikimedia.org/T326293
• https://phabricator.wikimedia.org/T326293

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