---
id: "CVE-2026-116880"
kind: "vulnerability"
aliases: ["CVE-2026-116880"]
title: "Semantic MediaWiki: CSRF in SMWAdmin lets lured admins wipe semantic data"
severity: "high"
cvss: 7.1
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["mediawiki", "package", "self-hosted", "semantic-mediawiki"]
not_affected_if: ["default-config", "no-smw-admin-users"]
published_at: "2026-10-27T11:17:30+00:00"
first_seen_at: "2026-10-27T11:31:27+00:00"
updated_at: "2026-10-27T11:31:53+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-116880", "first_seen_at": "2026-10-27T11:31:27+00:00"}]
---

# Semantic MediaWiki: CSRF in SMWAdmin lets lured admins wipe semantic data

Semantic MediaWiki versions from 3.0.0 before 7.3.1 overwrite the edit token on Special:SMWAdmin with a freshly generated valid one, which defeats the cross-site request forgery check. An attacker can lure a logged-in smw-admin user to a malicious page that triggers schema setup, entity disposal or job actions, causing semantic data loss and resource exhaustion.

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

## How to check

- Check the installed Semantic MediaWiki version on Special:Version or in `composer.lock` for `mediawiki/semantic-media-wiki`; versions from `3.0.0` up to but not including `7.3.1` are affected.
- Confirm whether any users hold the smw-admin group on the wiki.

## Fix

- Upgrade Semantic MediaWiki to `7.3.1` or later.
- Until upgraded, restrict or remove the smw-admin group from accounts that do not need it.

## Timeline

- 2026-10-27T11:31:27+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-116880

## From the sources

Semantic MediaWiki from 3.0.0 before 7.3.1 contains a cross-site request forgery vulnerability in Special:SMWAdmin because it overwrites the wpEditToken with a freshly generated valid token. Attackers can lure an authenticated smw-admin user to a malicious page that triggers schema setup, entity-disposal, or job actions, causing semantic data loss and resource exhaustion.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_