---
id: "CVE-2026-116823"
kind: "vulnerability"
aliases: ["CVE-2026-116823"]
title: "YesWiki: crafted links inject JavaScript into pages via query parameters"
severity: "medium"
cvss: 6.1
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["package", "php", "self-hosted", "yeswiki"]
not_affected_if: ["upgraded-to-4.7.0"]
published_at: "2026-10-27T00:17:17+00:00"
first_seen_at: "2026-10-27T00:25:56+00:00"
updated_at: "2026-10-27T00:26:35+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-116823", "first_seen_at": "2026-10-27T00:25:56+00:00"}]
---

# YesWiki: crafted links inject JavaScript into pages via query parameters

YesWiki before 4.7.0 reflects unsanitized request parameters into pages through Bazar field handling and Twig raw output. An attacker who gets a victim to open a crafted link can run JavaScript in the victim's session and perform actions as that user.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed YesWiki version in the wiki's version file or admin panel; versions below `4.7.0` are affected.
- unknown

## Fix

- Upgrade YesWiki to `4.7.0` or later.
- Until upgraded, avoid sending users links with unexpected query parameters and review admin sessions.

## Timeline

- 2026-10-27T00:25:56+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-116823

## From the sources

YesWiki before 4.7.0 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject JavaScript by supplying query parameters matching missing Bazar field names. Attackers can craft links where BazarField::getValue() falls back to unsanitized $_REQUEST values rendered via Twig |raw templates, performing same-origin authenticated actions in victims' sessions.

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