---
id: "CVE-2026-126560"
page: "https://infrastack.ai/live/CVE-2026-126560"
kind: "vulnerability"
aliases: ["CVE-2026-126560"]
title: "Semantic MediaWiki: stored XSS via DataTables tables runs script in viewers' browsers"
severity: "medium"
cvss: 5.4
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["mediawiki", "package", "self-hosted", "semantic-mediawiki"]
not_affected_if: ["no-smw-datatable-tables", "versions-7.4.1-or-later"]
published_at: "2026-11-11T03:16:49+00:00"
first_seen_at: "2026-11-11T03:24:59+00:00"
updated_at: "2026-11-11T03:26:31+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-126560", "first_seen_at": "2026-11-11T03:24:59+00:00"}]
exploit_sources: []
---

# Semantic MediaWiki: stored XSS via DataTables tables runs script in viewers' browsers

Link for people: https://infrastack.ai/live/CVE-2026-126560 (this .md is for agents)

Semantic MediaWiki's DataTables integration renders author-written smw-datatable cell attributes without sanitising them. A user with page-edit rights can store markup that runs script in the browser of anyone who views the page, including administrators.

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

## How to check

- Find the installed version of Semantic MediaWiki in the wiki's `Special:Version` page or `composer.json`/`LocalSettings.php` setup.
- Check whether any page uses the `smw-datatable` class, with `data-search` or `data-filter` attributes.

## Fix

- Semantic MediaWiki: upgrade to `7.4.1` or later (the fix version for this CVE per the NVD range: before 7.4.1).

## Timeline

- 2026-11-11T03:24:59+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-126560

## Documents

- [advisory] Vendor advisory: github.com https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-gg2q-rc52-22pp
- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/semantic-mediawiki-3.0.0-before-7.4.1-stored-xss-via-data-search-attributes
- [fix] Patch: github.com https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/db7f59461a7815416a719b71ce48fb76481ecaf2
- [fix] Release notes: github.com https://github.com/SemanticMediaWiki/SemanticMediaWiki/releases/tag/7.4.1

## From the sources

Semantic MediaWiki 3.0.0 before 7.4.1 contains a stored cross-site scripting vulnerability in the DataTables integration that initialises author-written smw-datatable tables unchanged. Users with page-edit rights can add HTML entity-encoded markup in data-search or data-filter cell attributes, executing script in viewers' browsers including administrators.

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