CVE-2026-46670: Yeswiki

Critical severity, CVSS 9.8. EPSS: 2% chance of exploitation in the next 30 days.

YesWiki is a wiki system written in PHP. Prior to version 4.6.4, an unauthenticated SQL injection in the Bazar form-import path (`FormManager::create()`) allows any unauthenticated visitor of a default YesWiki install to inject arbitrary SQL into an `INSERT` statement and read the full database, including `yeswiki_users.password` hashes. Version 4.6.4 fixes the issue.

Affected products

• Yeswiki Yeswiki: before 4.6.4 (fixed in 4.6.4)

Published 2026-08-11. Last modified 2026-09-09.