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CVE-2026-77606

Semantic MediaWiki has reflected XSS in Special:Ask plain table headers

CVSS 3.1 6.1 MEDIUMCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-77606

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-77606

Published

SemanticMediaWiki

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "SemanticMediaWiki",
                    "product": "SemanticMediaWiki",
                    "versions": [
                        {
                            "version": "< 7.2.0",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON