What’s Vulnerable › Vulnerabilities

CVE-2021-29483: wikiconfig API leaked private config variables set through ManageWiki

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-04-28 · updated 2026-06-17
• Weakness: CWE-200

Description

ManageWiki is an extension to the MediaWiki project. The 'wikiconfig' API leaked the value of private configuration variables set through the ManageWiki variable to all users. This has been patched by https://github.com/miraheze/ManageWiki/compare/99f3b2c8af18...befb83c66f5b.patch. If you are unable to patch set `$wgAPIListModules['wikiconfig'] = 'ApiQueryDisabled';` or remove private config as a workaround.

Affected products

• miraheze ManageWiki: before 2021-04-28 — fixed in 2021-04-28

How to fix

Upgrade to a fixed version: miraheze ManageWiki 2021-04-28. Check the vendor advisory for mitigations.

References

• https://github.com/miraheze/ManageWiki/commit/befb83c66f5b643e174897ea41a8a46679b26304
• https://github.com/miraheze/ManageWiki/security/advisories/GHSA-jmc9-rv2f-g8vv
• https://phabricator.miraheze.org/T7213
• https://github.com/miraheze/ManageWiki/commit/befb83c66f5b643e174897ea41a8a46679b26304
• https://github.com/miraheze/ManageWiki/security/advisories/GHSA-jmc9-rv2f-g8vv
• https://phabricator.miraheze.org/T7213

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