SQL Injection Vulnerability in YesWiki Product from YesWiki
CVE-2026-52775

8.8HIGH

Key Information:

Vendor

Yeswiki

Status
Yeswiki
Vendor
CVE Published:
4 September 2026

What is CVE-2026-52775?

YesWiki, a PHP-based wiki system, prior to version 4.6.6, contains a SQL injection vulnerability in the ReactionManager::deleteUserReaction() function. This flaw allows authenticated users to manipulate SQL queries through unvalidated URL path parameters, specifically {idreaction} and {id}. The lack of proper escaping and parameterization enables an attacker to execute arbitrary SQL commands, which can compromise the integrity of the database. The issue has been resolved in version 4.6.6, and it is crucial for users to update to this version to enhance their security against such threats.

Affected Version(s)

yeswiki < 4.6.6

References

https://github.com/YesWiki/yeswiki/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/YesWiki/yeswiki/commit/90ca54fb518e1c4...
x_refsource_MISC
https://github.com/YesWiki/yeswiki/releases/tag/v4.6.6
x_refsource_MISC

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.