---
id: CVE-2026-116205
title: 'YesWiki before 4.7.0 Unauthenticated SSRF via [[|URL]] Raw-Inclusion Syntax'
summary: >-
  YesWiki before 4.7.0 contains an unauthenticated server-side request forgery
  vulnerability that allows remote attackers to fetch arbitrary URLs by
  supplying [[|URL]] wiki syntax to the render handler. Attackers can pass the
  syntax in the…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-918
vendor: YesWiki
product: yeswiki
affected:
  - yeswiki < 4.7.0
published: '2026-10-25'
updated: '2026-10-25'
sourceUpdated: '2026-10-25T13:20:35.879Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-116205'
references:
  - url: 'https://github.com/YesWiki/yeswiki/security/advisories/GHSA-x9j5-r988-9jcc'
    label: GitHub Security Advisory (GHSA-x9j5-r988-9jcc)
  - url: >-
      https://www.vulncheck.com/advisories/yeswiki-before-4.7.0-unauthenticated-ssrf-via-url-raw-inclusion-syntax
    label: >-
      VulnCheck Advisory: YesWiki before 4.7.0 Unauthenticated SSRF via [[|URL]]
      Raw-Inclusion Syntax
tags:
  - cve.org
ingestedAt: '2026-10-25T22:08:29.939Z'
---

## Overview

YesWiki before 4.7.0 contains an unauthenticated server-side request forgery vulnerability that allows remote attackers to fetch arbitrary URLs by supplying [[|URL]] wiki syntax to the render handler. Attackers can pass the syntax in the content parameter of the page render handler to reach internal hosts and ports and read their responses.

## Affected

- `yeswiki < 4.7.0`

## Remediation

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