CVE-2026-34598— YesWiki has Persistant Blind XSS at "/?BazaR&vue=consulter"
Quick assessment
Affected
YesWiki yeswiki
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
YesWiki是法国YesWiki组织的一个用 PHP 编写的 wiki 系统。用于以协作方式创建和管理网站。 YesWiki 4.6.0之前版本存在安全漏洞，该漏洞源于表单标题字段存在存储型和盲型跨站脚本漏洞，可能导致恶意攻击者注入JavaScript并在用户访问时执行。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1189 · Drive-by Compromise
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I. Basic Information for CVE-2026-34598
Vulnerability Information
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Vulnerability Title
YesWiki has Persistant Blind XSS at "/?BazaR&vue=consulter"
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
YesWiki 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
YesWiki是法国YesWiki组织的一个用 PHP 编写的 wiki 系统。用于以协作方式创建和管理网站。 YesWiki 4.6.0之前版本存在安全漏洞，该漏洞源于表单标题字段存在存储型和盲型跨站脚本漏洞，可能导致恶意攻击者注入JavaScript并在用户访问时执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-34598
| # | POC Description | Source Link | Shenlong Link |
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AI-Generated POC
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Vendor Advisories for CVE-2026-34598 (1)
IV. Related Vulnerabilities
Same product: yeswiki
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CVE-2026-104473
YesWiki before 4.5.3 Multiple Reflected XSS via BazaR and li -
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YesWiki before 4.6.7 Missing Authorization via Attachment Do -
CVE-2026-104471
YesWiki before 4.6.7 Unrestricted File Upload via Bazar CSV -
CVE-2026-104469
YesWiki before 4.6.7 Session Fixation via Login in AuthContr -
CVE-2026-104470
YesWiki before 4.6.7 SSRF and XSS via Bazar valeur Action
Same vendor: YesWiki
-
CVE-2026-104473
YesWiki before 4.5.3 Multiple Reflected XSS via BazaR and li -
CVE-2026-104472
YesWiki before 4.6.7 Missing Authorization via Attachment Do -
CVE-2026-104471
YesWiki before 4.6.7 Unrestricted File Upload via Bazar CSV -
CVE-2026-104469
YesWiki before 4.6.7 Session Fixation via Login in AuthContr -
CVE-2026-104470
YesWiki before 4.6.7 SSRF and XSS via Bazar valeur Action
Same weakness: CWE-79
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V. Comments for CVE-2026-34598
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