Semantic MediaWiki is a free, open-source extension to MediaWiki that lets users store and query data within the wiki's pages. Prior to version 7.2.0, when `headers=plain`, table header text was emitted into `<th>` via a raw HTML path. User-controlled `mainlabel` content could therefore become executable HTML. Version 7.2.0 fixes the issue.

Project Subscriptions

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-3jp5-3h47-28qf Semantic MediaWiki has reflected XSS in Special:Ask plain table headers
Fixes

Solution

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Workaround

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History

Fri, 18 Sep 2026 16:45:00 +0000

Type Values Removed Values Added
Description Semantic MediaWiki is a free, open-source extension to MediaWiki that lets users store and query data within the wiki's pages. Prior to version 7.2.0, when `headers=plain`, table header text was emitted into `<th>` via a raw HTML path. User-controlled `mainlabel` content could therefore become executable HTML. Version 7.2.0 fixes the issue.
Title Semantic MediaWiki has reflected XSS in Special:Ask plain table headers
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-09-18T16:41:42.731Z

Reserved: 2026-08-20T20:48:20.507Z

Link: CVE-2026-77606

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses