---
id: CVE-2026-104450
title: >-
  YesWiki before 4.6.7 contains a missing authorization flaw in the pointimage
  action (tools/attach/actions/pointimage.php), which saves content to an
  attacker-chosen page with write ACL checks bypassed
summary: >-
  YesWiki before 4.6.7 contains a missing authorization flaw in the pointimage
  action (tools/attach/actions/pointimage.php), which saves content to an
  attacker-chosen page with write ACL checks bypassed. Unauthenticated attackers
  can POST …
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N'
cwe:
  - CWE-79
vendor: YesWiki
product: yeswiki
affected:
  - yeswiki < 4.6.7
published: '2026-10-02'
updated: '2026-10-02'
sourceUpdated: '2026-10-02T12:17:16.627'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-104450'
references:
  - url: 'https://github.com/YesWiki/yeswiki/security/advisories/GHSA-7547-q56p-h99v'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-acl-bypass-and-stored-xss-via-pointimage-action
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-02T12:17:44.339Z'
---

## Overview

YesWiki before 4.6.7 contains a missing authorization flaw in the pointimage action (tools/attach/actions/pointimage.php), which saves content to an attacker-chosen page with write ACL checks bypassed. Unauthenticated attackers can POST pagetag, title, and description fields to any page rendering {{pointimage}} to append raw HTML or JavaScript to any wiki page, including pages whose write ACL restricts editing, causing stored cross-site scripting in viewers' and administrators' browsers.

## Remediation

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