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CVE-2026-104461— YesWiki before 4.6.7 Stored XSS via Unsanitized SVG Upload in Bazar FileField

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 在 4.6.7 版本之前存在一个存储型跨站脚本（XSS）漏洞，该漏洞位于 Bazar 的 FileField 模块中。此模块仅对上传文件的扩展名进行验证，而未调用 HtmlPurifierService::cleanFile 方法进行清理，导致 SVG 文件被原样存储并以 image/svg+xml 类型内联输出。攻击者可以通过向 POST /api/entries/{formId} 提交包含恶意脚本的 SVG 文件，在文件被打开时在 Wiki 原始上下文中执行该脚本，从而导致管理员会话劫持或账户被

CVSS 5.4 · Medium

Affected Version Matrix 2

VendorProduct Version RangeStatus
YesWiki yeswiki < 4.6.7 affected
4.6.7 unaffected
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I. Basic Information for CVE-2026-104461

Vulnerability Information
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Vulnerability Title
YesWiki before 4.6.7 Stored XSS via Unsanitized SVG Upload in Bazar FileField
Source: CVE Program / CVE List V5
Vulnerability Description
YesWiki before 4.6.7 contains a stored cross-site scripting vulnerability in the Bazar FileField, which validates only the upload's file extension and never calls HtmlPurifierService::cleanFile, so SVG files are stored verbatim and served inline as image/svg+xml. Authenticated users can submit entries via POST /api/entries/{formId} with SVG files containing script that executes in the wiki origin when the file is opened, enabling administrator session or account compromise.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A: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

Affected Products

Vendor Product Affected Versions CPE Subscribe
YesWiki yeswiki 0 ~ 4.6.7 -

II. Public POCs for CVE-2026-104461

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III. Intelligence Information for CVE-2026-104461

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Vendor Advisories for CVE-2026-104461 (2)

Same Patch Batch · YesWiki · 2026-10-02 · 36 CVEs total

CVE-2026-104464 8.6 HIGH YesWiki before 4.6.7 SSRF via Bazar abonnements sync actor parameter
CVE-2026-104457 8.6 HIGH YesWiki before 4.6.7 SQL Injection via filtertags filterN parameter
CVE-2026-104445 8.2 HIGH YesWiki before 4.6.7 Authentication Bypass via ActivityPub Inbox Actor Spoofing
CVE-2026-104467 8.1 HIGH YesWiki before 4.6.7 Authorization Bypass via Public API Mode
CVE-2026-104443 8.1 HIGH YesWiki before 4.6.7 Scope Bypass via Triples Delete API
CVE-2026-104448 8.1 HIGH YesWiki before 4.6.7 CSRF Page Deletion via ajaxdeletepage Handler
CVE-2026-104456 7.6 HIGH YesWiki before 4.6.7 Second-Order SQL Injection via ACL Username
CVE-2026-104460 7.5 HIGH YesWiki before 4.6.7 Unauthenticated Blind SQL Injection via newtextsearch
CVE-2026-104462 7.5 HIGH YesWiki before 4.6.7 SQL Injection via nuagetag tags parameter
CVE-2026-104472 7.5 HIGH YesWiki before 4.6.7 Missing Authorization via Attachment Download Handler
CVE-2026-104470 7.4 HIGH YesWiki before 4.6.7 SSRF and XSS via Bazar valeur Action
CVE-2026-104471 7.2 HIGH YesWiki before 4.6.7 Unrestricted File Upload via Bazar CSV Import
CVE-2026-104444 7.1 HIGH YesWiki before 4.6.7 Authorization Bypass via Comments API editComment
CVE-2026-104447 7.1 HIGH YesWiki before 4.6.7 CSRF Package Deletion via autoupdate UpdateAction
CVE-2026-104463 7.0 HIGH YesWiki before 4.6.7 Unauthenticated SSRF via ActivityPub Inbox
CVE-2026-104469 6.8 MEDIUM YesWiki before 4.6.7 Session Fixation via Login in AuthController.php
CVE-2026-104459 6.5 MEDIUM YesWiki before 4.6.7 SSRF via ActivityPub WebFinger actor_handle
CVE-2026-104458 6.5 MEDIUM YesWiki before 4.6.7 SSRF Guard Bypass via IPv6 Transition Addresses
CVE-2026-104449 6.5 MEDIUM YesWiki before 4.6.7 Unauthenticated Page Overwrite via Bazar id_fiche
CVE-2026-104446 6.5 MEDIUM YesWiki before 4.6.7 Unauthenticated Open Mail Relay via Contact Mail Handler

Showing top 20 of 36 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: yeswiki
Same vendor: YesWiki
Same weakness: CWE-79

V. Comments for CVE-2026-104461

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