---
id: CVE-2026-52772
title: YesWiki is a wiki system written in PHP
summary: >-
  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 b…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
  - CWE-116
vendor: YesWiki
product: yeswiki
affected:
  - yeswiki < 4.6.6
patched:
  - yeswiki/yeswiki 4.6.6
published: '2026-09-05'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T18:16:58.757'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-52772'
references:
  - url: >-
      https://github.com/YesWiki/yeswiki/commit/5d1a4d07fecb0706f33e5dfbbe6ff5ef1892b2a7
    label: security-advisories@github.com
  - url: 'https://github.com/YesWiki/yeswiki/releases/tag/v4.6.6'
    label: security-advisories@github.com
  - url: 'https://github.com/YesWiki/yeswiki/security/advisories/GHSA-xc7j-3g8q-9vh4'
    label: security-advisories@github.com
  - url: 'https://github.com/YesWiki/yeswiki/security/advisories/GHSA-xc7j-3g8q-9vh4'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://github.com/advisories/GHSA-xc7j-3g8q-9vh4'
tags:
  - nvd
  - cve.org
  - exploit-available
  - ghsa
  - composer
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-09T17:43:56.777716Z'
epss: 0.00338
epssPercentile: 0.24515
aliases:
  - GHSA-xc7j-3g8q-9vh4
ecosystem: composer
ingestedAt: '2026-07-09T21:52:34.678Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-52772)

Affected packages:

- `yeswiki/yeswiki < 4.6.6`

Patched in:

- `yeswiki/yeswiki 4.6.6`

Source: https://github.com/advisories/GHSA-xc7j-3g8q-9vh4