---
id: CVE-2026-116826
title: YesWiki before 4.7.0 Authenticated SSRF via Page Duplication API downloadFile
summary: >-
  YesWiki before 4.7.0 contains a server-side request forgery vulnerability in
  DuplicationManager::downloadFile() that allows authenticated administrators to
  make arbitrary outbound requests via the files array. Attackers can POST
  file:// …
severity: medium
cvss: 6.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-918
vendor: YesWiki
product: yeswiki
affected:
  - yeswiki < 4.7.0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-27T13:42:16.595290Z'
published: '2026-10-26'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T14:15:19.006Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-116826'
references:
  - url: 'https://github.com/YesWiki/yeswiki/security/advisories/GHSA-qmpm-85pr-3qq8'
    label: GitHub Security Advisory (GHSA-qmpm-85pr-3qq8)
  - url: >-
      https://www.vulncheck.com/advisories/yeswiki-before-4.7.0-authenticated-ssrf-via-page-duplication-api-downloadfile
    label: >-
      VulnCheck Advisory: YesWiki before 4.7.0 Authenticated SSRF via Page
      Duplication API downloadFile
tags:
  - cve.org
epss: 0.00241
epssPercentile: 0.15158
ingestedAt: '2026-10-27T16:11:59.447Z'
---

## Overview

YesWiki before 4.7.0 contains a server-side request forgery vulnerability in DuplicationManager::downloadFile() that allows authenticated administrators to make arbitrary outbound requests via the files array. Attackers can POST file:// or internal URLs to /api/pages/{tag}/duplicate, storing local files, cloud metadata, or database credentials in the publicly accessible files/ directory.

## Affected

- `yeswiki < 4.7.0`

## Remediation

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