Cross-site Scripting (XSS)

Semantic MediaWiki is vulnerable to Cross-Site Scripting XSS. The vulnerability is due to improper sanitization of user-controlled mainlabel content when headers=plain, which allows an attacker to inject executable HTML into table headers and execute malicious scripts in a victim's browser...

CVE-2026-77606

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 via a raw HTML path. User-controlled mainlabel content could therefore become executable...

CVE-2026-77606

Semantic MediaWiki , a free open-source extension to MediaWiki, is affected by a reflected XSS vulnerability in Special:Ask when the headers=plain option is used. Table header text was emitted into elements via a raw HTML path , allowing user-controlled mainlabel content to become executable HTM...

CVE-2026-77606 Semantic MediaWiki has reflected XSS in Special:Ask plain table headers

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 via a raw HTML path. User-controlled mainlabel content could therefore become executable...

CVE-2026-77606 Semantic MediaWiki has reflected XSS in Special:Ask plain table headers

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 via a raw HTML path. User-controlled mainlabel content could therefore become executable...

CVE-2026-77606 Semantic MediaWiki has reflected XSS in Special:Ask plain table headers

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 via a raw HTML path. User-controlled mainlabel content could therefore become executable...

GHSA-3JP5-3H47-28QF Semantic MediaWiki has reflected XSS in Special:Ask plain table headers

Failure mode When headers=plain, table header text was emitted into via a raw HTML path. User-controlled mainlabel content could therefore become executable HTML. Remediation - TableResultPrinter now applies output-context escaping before passing plain headers to the table renderer. - The fix is...

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

Failure mode When headers=plain, table header text was emitted into via a raw HTML path. User-controlled mainlabel content could therefore become executable HTML. Remediation - TableResultPrinter now applies output-context escaping before passing plain headers to the table renderer. - The fix is...

Cross-site Scripting (XSS)

Overview Affected versions of this package are vulnerable to Cross-site Scripting XSS via the headers=plain process. An attacker can execute arbitrary HTML or JavaScript code in the context of the user's browser by supplying crafted mainlabel content that is rendered in table headers. Details...

CVE-2026-77606: Improper Neutralization of Input During Web Page Generation

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 via a raw HTML path. User-controlled mainlabel content could therefore become executable...

PT-2026-95498

Name of the Vulnerable Software and Affected Versions Semantic MediaWiki versions prior to 7.2.0 Description When the headers parameter is set to plain, table header text is emitted into the element via a raw HTML path. This allows user-controlled content within the mainlabel variable to be...