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    CVE-2026-34598

    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:Apr 2, 2026
    Last Modified:Apr 13, 2026
    EPS:Apr 2, 2026
    EPSS Score:0.00042
    CVSS Score:6.1

    Affected Products

    Vendor
    Yeswiki
    Product
    Yeswiki

    Exploits

    https://github.com/YesWiki/yeswiki/security/advisories/GHSA-37fq-47qj-6j5j

    Related CVEs

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    CVE-2026-52772 (CVSS 5.5) — YesWiki is a wiki system written in PHP. Prior to version 4.6.6, Bazar form-field templates still apply |raw('…
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    CVE-2026-52769 (CVSS 8.3) — YesWiki is a wiki system written in PHP. From version 4.6.2 to before version 4.6.6, the POST /api/forms/{form…
    CVE-2026-52767 (CVSS 8.2) — YesWiki is a wiki system written in PHP. From version 4.6.2 to before version 4.6.6, HttpSignatureService::ver…
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High