YesWiki up to 4.6.5 Bazar /?BazaR sql injection

Summaryinfo

A vulnerability identified as critical has been detected in YesWiki up to 4.6.5. This issue affects some unknown processing of the file /?BazaR of the component Bazar. This manipulation causes sql injection. This vulnerability is registered as CVE-2026-52770. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability classified as critical was found in YesWiki up to 4.6.5. Affected by this vulnerability is some unknown functionality of the file /?BazaR of the component Bazar. The manipulation with an unknown input leads to a sql injection vulnerability. The CWE definition for the vulnerability is CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

YesWiki is a wiki system written in PHP. Prior to version 4.6.6, YesWiki’s public Bazar entry-listing APIs are vulnerable to unauthenticated SQL injection in numeric query / queries filters. For Bazar fields whose value structure is numeric, YesWiki escapes the attacker-controlled filter value but inserts it into SQL without quotes or numeric validation. An unauthenticated attacker can inject boolean SQL expressions and infer database contents from whether entries are returned. This issue has been patched in version 4.6.6.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-52770 since 06/08/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1505 for this issue.

Upgrading to version 4.6.6 eliminates this vulnerability.

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Productinfo

Type

• Content Management System

Name

• YesWiki

Version

• 4.6.0
• 4.6.1
• 4.6.2
• 4.6.3
• 4.6.4
• 4.6.5

Website

• Product: https://github.com/YesWiki/yeswiki/

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