What’s Vulnerable › Vulnerabilities

CVE-2019-12471

• Severity: medium (CVSS 6.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-07-10 · updated 2026-06-17
• Weakness: CWE-79

Description

Wikimedia MediaWiki 1.30.0 through 1.32.1 has XSS. Loading user JavaScript from a non-existent account allows anyone to create the account, and perform XSS on users loading that script. Fixed in 1.32.2, 1.31.2, 1.30.2 and 1.27.6.

Affected products

• Debian Linux: 9.0
• Wikimedia Foundation MediaWiki: from 1.30.0 before 1.30.2; from 1.31.0 before 1.31.2; from 1.32.0 before 1.32.2 — fixed in 1.30.2, 1.31.2, 1.32.2

How to fix

Upgrade to a fixed version: Wikimedia Foundation MediaWiki 1.30.2, 1.31.2, 1.32.2. Check the vendor advisory for mitigations.

References

• https://lists.wikimedia.org/pipermail/wikitech-l/2019-June/092152.html
• https://phabricator.wikimedia.org/T207603
• https://seclists.org/bugtraq/2019/Jun/12
• https://www.debian.org/security/2019/dsa-4460
• https://lists.wikimedia.org/pipermail/wikitech-l/2019-June/092152.html
• https://phabricator.wikimedia.org/T207603
• https://seclists.org/bugtraq/2019/Jun/12
• https://www.debian.org/security/2019/dsa-4460

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