---
id: CVE-2026-116881
title: Semantic MediaWiki 3.0.0 before 7.3.1 XSS via Property-Value Autocomplete
summary: >-
  Semantic MediaWiki from 3.0.0 before 7.3.1 contains a cross-site scripting
  vulnerability that allows attackers to inject markup by storing malicious
  semantic property values rendered unescaped in autocomplete suggestions. When
  another us…
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: SemanticMediaWiki
product: SemanticMediaWiki
affected:
  - SemanticMediaWiki >= 3.0.0 < 7.3.1
published: '2026-10-27'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T10:26:44.779Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-116881'
references:
  - url: >-
      https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-mvpf-4wj8-2hwf
    label: GitHub Security Advisory (GHSA-mvpf-4wj8-2hwf)
  - url: >-
      https://www.vulncheck.com/advisories/semantic-mediawiki-3.0.0-before-7.3.1-xss-via-property-value-autocomplete
    label: >-
      VulnCheck Advisory: Semantic MediaWiki 3.0.0 before 7.3.1 XSS via
      Property-Value Autocomplete
tags:
  - cve.org
ingestedAt: '2026-10-27T16:11:59.288Z'
---

## Overview

Semantic MediaWiki from 3.0.0 before 7.3.1 contains a cross-site scripting vulnerability that allows attackers to inject markup by storing malicious semantic property values rendered unescaped in autocomplete suggestions. When another user opens the property-value autocomplete with an empty query, jquery.autocomplete.js concatenates the raw PValueLookup API value into HTML via container.html(), altering the dropdown and potentially executing script.

## Affected

- `SemanticMediaWiki >= 3.0.0 < 7.3.1`

## Remediation

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