---
id: CVE-2026-116203
title: YesWiki before 4.7.0 Stored XSS via filtertags Action Parameters
summary: >-
  YesWiki before 4.7.0 contains a stored cross-site scripting vulnerability in
  the filtertags action, which echoes attacker-controlled token values without
  output encoding. Anonymous attackers can inject markup via action-attribute
  paramet…
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-79
vendor: YesWiki
product: yeswiki
affected:
  - yeswiki < 4.7.0
published: '2026-10-25'
updated: '2026-10-25'
sourceUpdated: '2026-10-25T13:20:34.532Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-116203'
references:
  - url: 'https://github.com/YesWiki/yeswiki/security/advisories/GHSA-f53x-3gqx-xq76'
    label: GitHub Security Advisory (GHSA-f53x-3gqx-xq76)
  - url: >-
      https://www.vulncheck.com/advisories/yeswiki-before-4.7.0-stored-xss-via-filtertags-action-parameters
    label: >-
      VulnCheck Advisory: YesWiki before 4.7.0 Stored XSS via filtertags Action
      Parameters
tags:
  - cve.org
ingestedAt: '2026-10-25T22:08:29.941Z'
---

## Overview

YesWiki before 4.7.0 contains a stored cross-site scripting vulnerability in the filtertags action, which echoes attacker-controlled token values without output encoding. Anonymous attackers can inject markup via action-attribute parameters that bypasses the allow_raw_html gate, executing JavaScript for every page viewer.

## Affected

- `yeswiki < 4.7.0`

## Remediation

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