CVE-2026-34598: YesWiki has Persistent Blind XSS at "/?BazaR&vue=consulter"

April 1, 2026 (updated April 10, 2026)

A stored and blind XSS vulnerability exists in the form title field. A malicious attacker can inject JavaScript without any authentication via a form title that is saved in the backend database. When any user visits that injected page, the JavaScript payload gets executed.

Type: Stored and Blind Cross-Site Scripting (XSS) Affected Component: form title input field Authentication Required: No (Unauthenticated attack possible) Impact: Arbitrary JavaScript execution in victim’s browser

References

github.com/YesWiki/yeswiki
github.com/YesWiki/yeswiki/releases/tag/v4.6.0
github.com/YesWiki/yeswiki/security/advisories/GHSA-37fq-47qj-6j5j
github.com/advisories/GHSA-37fq-47qj-6j5j
nvd.nist.gov/vuln/detail/CVE-2026-34598

Code Behaviors & Features

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