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CVE-2026-126567— Semantic MediaWiki 3.0.0 before 7.4.1 Stored XSS via Special:Ask Debug Output

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 3.0.0 至 7.4.1 之前的版本在启用 ElasticStore 后端的 Special:Ask 功能中存在存储型跨站脚本（Stored XSS）漏洞。拥有编辑权限的用户可通过未转义的 native_result 和 score_set 输出注入脚本。攻击者可在文本属性或子对象名称中存储恶意标记，随后诱导受害者（包括管理员）访问精心构造的 Special:Ask 链接，从而在受害者的会话中执行脚本。

CVSS 5.4 · Medium
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I. Basic Information for CVE-2026-126567

Vulnerability Information
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Vulnerability Title
Semantic MediaWiki 3.0.0 before 7.4.1 Stored XSS via Special:Ask Debug Output
Source: CVE Program / CVE List V5
Vulnerability Description
Semantic MediaWiki 3.0.0 before 7.4.1 contains a stored cross-site scripting vulnerability in Special:Ask with the ElasticStore backend, allowing users with edit rights to inject script through unescaped native_result and score_set output. Attackers can store markup in a Text property or subobject name, then lure victims including administrators to a crafted Special:Ask link to execute script in their session.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/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 3.0.0 ~ 7.4.1 -

II. Public POCs for CVE-2026-126567

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III. Intelligence Information for CVE-2026-126567

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Other References for CVE-2026-126567 (6)

Same Patch Batch · SemanticMediaWiki · 2026-11-11 · 9 CVEs total

CVE-2026-126566 7.1 HIGH Semantic MediaWiki 7.3.1 before 7.4.1 Incorrect Authorization via Edit Protection Annotati
CVE-2026-126561 7.1 HIGH Semantic MediaWiki 2.5.0 before 7.4.1 Missing Authorization via Is edit protected Annotati
CVE-2026-126563 6.1 MEDIUM Semantic MediaWiki 2.4.0 before 7.4.1 Reflected XSS via Special:Ask Date Format
CVE-2026-126560 5.4 MEDIUM Semantic MediaWiki 3.0.0 before 7.4.1 Stored XSS via data-search Attributes
CVE-2026-126564 5.4 MEDIUM Semantic MediaWiki 2.5.0 before 7.4.1 Stored XSS via Special:Browse Factbox Title
CVE-2026-126559 4.8 MEDIUM Semantic MediaWiki 4.2.0 before 7.4.1 Stored XSS via Special:FacetedSearch
CVE-2026-126565 4.3 MEDIUM Semantic MediaWiki 3.0.0 before 7.4.1 DoS via Exponential Concept Expansion
CVE-2026-126562 4.3 MEDIUM Semantic MediaWiki 3.0.0 before 7.4.1 Uncontrolled Recursion via ElasticStore ConceptDescr

IV. Related Vulnerabilities

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