CVE-2026-34598

Description

YesWiki is a wiki system written in PHP. Prior to version 4.6.0, 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. This issue has been patched in version 4.6.0.

PUBLISHED Reserved 2026-03-30 | Published 2026-04-02 | Updated 2026-04-02 | Assigner GitHub_M

Problem types

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-87: Improper Neutralization of Alternate XSS Syntax

Product status

References

github.com/...eswiki/security/advisories/GHSA-37fq-47qj-6j5j

github.com/YesWiki/yeswiki/releases/tag/v4.6.0

cve.org (CVE-2026-34598)

nvd.nist.gov (CVE-2026-34598)

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