CVE-2026-52775
High
Description
YesWiki is a wiki system written in PHP. Prior to version 4.6.6, YesWiki through the latest development branch contains a SQL injection vulnerability in ReactionManager::deleteUserReaction() that allows any authenticated user to inject arbitrary SQL via the {idreaction} and {id} URL path parameters. The parameters are concatenated directly into a SQL LIKE clause without escaping or parameterization. This issue has been patched in version 4.6.6.
SeverityHigh
CVSS8.8
Exploit probability—
ProductYeswiki/yeswiki
PublishedSep 5, 2026
First seenSep 5, 2026
Weakness typeCWE-89SQL injection
How to fix
Update
- yeswiki/yeswiki4.6.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| yeswiki/yeswikiPackagist | v < 4.6.6 | 4.6.6 |
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