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CVE-2026-77607— Semantic MediaWiki affected by Special:Ask table `sep` parameter reflected XSS

Quick assessment

Affected
SemanticMediaWiki SemanticMediaWiki
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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, was inserted verbatim into HTML cell joins. This made it possible to inject HTML through the separator value.

CVSS 6.1 · Medium
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I. Basic Information for CVE-2026-77607

Vulnerability Information

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Vulnerability Title
Semantic MediaWiki affected by Special:Ask table `sep` parameter reflected XSS
Source: CVE Program / CVE List V5
Vulnerability 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, `sep` was inserted verbatim into HTML cell joins. This made it possible to inject HTML through the separator value. Version 7.2.0 fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
SemanticMediaWiki SemanticMediaWiki < 7.2.0 -

II. Public POCs for CVE-2026-77607

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III. Intelligence Information for CVE-2026-77607

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Other References for CVE-2026-77607 (2)

Same Patch Batch · SemanticMediaWiki · 2026-09-18 · 7 CVEs total

CVE-2025-61682 8.6 HIGH Semantic MediaWiki vulnerable to stored XSS through wikitext via improper use of non-reser
CVE-2026-77606 6.1 MEDIUM Semantic MediaWiki has reflected XSS in Special:Ask plain table headers
CVE-2026-77609 6.1 MEDIUM Semantic MediaWiki has an open redirect in Special:URIResolver
CVE-2026-77608 6.1 MEDIUM Semantic MediaWiki has reflected XSS in `Special:SearchByProperty` (`property` and `value`
CVE-2026-77616 6.1 MEDIUM Semantic MediaWiki affected by reflected XSS in `Special:Ask` via a forged cursor paginati
CVE-2026-77610 6.1 MEDIUM Semantic MediaWiki has a query debug output XSS (`DebugFormatter`)

IV. Related Vulnerabilities

Same product: SemanticMediaWiki
Same vendor: SemanticMediaWiki
Same weakness: CWE-79

V. Comments for CVE-2026-77607

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