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CVE-2026-52772— YesWiki: Bazar form-field templates still apply `|raw('html')` to `field.label` / `field.hint` in attribute and label-body contexts — stored XSS in form renders (sibling class of commit `e6b66aa`)

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 是一个用 PHP 编写的 Wiki 系统。在 4.6.6 版本之前，Bazar 表单字段模板在属性（attribute）和标签主体（label-body）上下文中，仍然对 和 应用了 过滤器，导致在表单渲染时产生存储型 XSS（跨站脚本攻击）。该问题已在 4.6.6 版本中修复。

CVSS 5.5 · Medium EPSS 0.03% · P11

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2026-52772

Vulnerability Information
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Vulnerability Title
YesWiki: Bazar form-field templates still apply `|raw('html')` to `field.label` / `field.hint` in attribute and label-body contexts — stored XSS in form renders (sibling class of commit `e6b66aa`)
Source: CVE Program / CVE List V5
Vulnerability Description
YesWiki is a wiki system written in PHP. Prior to version 4.6.6, Bazar form-field templates still apply |raw('html') to field.label / field.hint in attribute and label-body contexts, resulting stored XSS in form renders. This issue has been patched in version 4.6.6.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/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 < 4.6.6 -

II. Public POCs for CVE-2026-52772

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III. Intelligence Information for CVE-2026-52772

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Patches & Fixes for CVE-2026-52772 (1)

Vendor Advisories for CVE-2026-52772 (1)

Other References for CVE-2026-52772 (1)

Same Patch Batch · YesWiki · 2026-09-04 · 12 CVEs total

CVE-2026-52777 9.4 CRITICAL YesWiki: Authenticated PHP Object Injection in BazarImportAction via unserialize
CVE-2026-52766 9.1 CRITICAL YesWiki: Unauthenticated arbitrary page deletion via `{{erasespamedcomments}}` action
CVE-2026-52775 8.8 HIGH YesWiki Authenticated SQL Injection in ReactionManager
CVE-2026-52769 8.3 HIGH YesWiki: Unauthenticated Server-Side Request Forgery via ActivityPub `Signature.keyId`
CVE-2026-52771 8.3 HIGH YesWiki: Second-Order SQL Injection in Page Delete API via Unescaped Page Tag (`ApiControl
CVE-2026-52767 8.2 HIGH YesWiki: Unauthenticated ActivityPub Signature-Verification Bypass via `!openssl_verify(..
CVE-2026-52770 7.5 HIGH Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') in ye
CVE-2026-52762 7.1 HIGH YesWiki: Authenticated (Admin) Server-Side Template Injection to Remote Code Execution via
CVE-2026-52763 6.5 MEDIUM YesWiki: SQL injection via the `recentchanges` action `period` argument leading to arbitra
CVE-2026-52773 6.1 MEDIUM Reflected XSS via Unescaped Archived-Revision `time` Parameter in `handlers/page/show.php`
CVE-2026-52774 6.1 MEDIUM Reflected XSS via Unescaped `id` Parameter in Bazar Widget HTML Attributes in YesWiki

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-52772

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