What’s Vulnerable › Vulnerabilities

CVE-2020-12051

• Severity: high (CVSS 7.5 v3.1)
• 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: 2020-04-21 · updated 2026-06-17

Description

The CentralAuth extension through REL1_34 for MediaWiki allows remote attackers to obtain sensitive hidden account information via an api.php?action=query&meta=globaluserinfo&guiuser= request. In other words, the information can be retrieved via the action API even though access would be denied when simply visiting wiki/Special:CentralAuth in a web browser.

Affected products

• Wikimedia Foundation MediaWiki: all versions

References

• https://gerrit.wikimedia.org/r/#/q/I3c80641dc1202df7428714f0ca44717a51ff6021
• https://phabricator.wikimedia.org/T250594
• https://gerrit.wikimedia.org/r/#/q/I3c80641dc1202df7428714f0ca44717a51ff6021
• https://phabricator.wikimedia.org/T250594

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