CVE-2026-116892: SemanticMediaWiki reflected XSS in extended search profile

CVE-2026-116892 · Severity: medium · CVSS 6.1 · Published 2026-10-27

SemanticMediaWiki is a plugin for MediaWiki wikis that adds semantic search capabilities. When an administrator enables the optional extended search engine, an attacker can craft a malicious URL with injected SVG markup that executes JavaScript in the browser of anyone who visits that link. This allows script execution within the wiki's domain, potentially compromising reader sessions or data.

Technologies: SemanticMediaWiki. Vendors: SemanticMediaWiki.

Quick answers

Is CVE-2026-116892 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-116892 being exploited in the wild.
How severe is CVE-2026-116892?
Medium severity, with a CVSS score of 6.1, published 27 October 2026.
Which products and versions are affected?
SemanticMediaWiki 3.1.0 before 7.3.1.
Is there a fix for CVE-2026-116892?
Yes: fixed in 7.3.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-116892 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-116892?
Check whether you run SemanticMediaWiki at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: 7.3.1

Technical details

A reflected XSS vulnerability in ProfileForm::profile_sheet fails to escape the search query parameter before rendering it into an HTML pre element. The ProfileForm component uses Html::rawElement with attacker-controlled $query containing SVG with event handlers, which are interpreted as markup rather than text. The vulnerability only affects wikis where the administrator has explicitly enabled $wgSearchType = ExtendedSearchEngine and requires no authentication or user interaction beyond visiting a crafted URL.

Affected products

  • SemanticMediaWiki SemanticMediaWiki 3.1.0 before 7.3.1

Timeline

  • 2026-09-28: disclosed
  • 2026-10-27: advisory

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.