CVE-2026-116821

Medium

Description

YesWiki before 4.7.0 contains a read-ACL bypass in AclService::updateRequestWithACL, which interpolates usernames into SQL LIKE patterns without escaping the _ and % wildcards. Self-registered attackers can use usernames such as ___ or %%% that over-match ACL tokens, reading pages and Bazar entries restricted to other users or groups via the public Bazar listing API.

SeverityMedium

CVSS6.5

Exploit probability—

Product

Yeswiki

PublishedOct 27, 2026

First seenOct 27, 2026

Weakness typeCWE-89SQL injection

How to fix

Update

YesWiki yeswiki4.7.0 or later

Patches

github.com/YesWiki/yeswiki/commit/f3b0dd093a7ace47dc29a515faeb02635baceae2

Vendor advisories

github.com/YesWiki/yeswiki/security/advisories/GHSA-q5j6-79p7-mp94

Affected products

Product	Affected versions	Fixed in
YesWiki yeswiki	v < 4.7.0	4.7.0

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