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CVE-2026-116891— SemanticMediaWiki 4.2.0 before 7.2.1 Reflected XSS via Special:FacetedSearch cstate

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.

SemanticMediaWiki 4.2.0 至 7.2.1（不含）版本中存在一个反射型跨站脚本（XSS）漏洞。未认证的攻击者可通过在 Special:FacetedSearch 页面中利用未经转义的 参数注入 HTML 代码。攻击者可构造包含 参数、与 校验和匹配的值或 参数，并配合特定的 值，从而突破隐藏输入框的属性限制，在受害者的浏览器中执行恶意脚本。

CVSS 6.1 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-116891

Vulnerability Information
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Vulnerability Title
SemanticMediaWiki 4.2.0 before 7.2.1 Reflected XSS via Special:FacetedSearch cstate
Source: CVE Program / CVE List V5
Vulnerability Description
SemanticMediaWiki from 4.2.0 before 7.2.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject HTML via unescaped cstate parameters in Special:FacetedSearch. Attackers can craft URLs with q, a matching crc32 csum or filtered=1, and cstate values that break out of hidden input attributes to execute script in victims' browsers.
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 4.2.0 ~ 7.2.1 -

II. Public POCs for CVE-2026-116891

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-116891

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Other References for CVE-2026-116891 (2)

Same Patch Batch · SemanticMediaWiki · 2026-10-27 · 22 CVEs total

CVE-2026-116871 7.5 HIGH Semantic MediaWiki 3.0.0 before 7.3.1 Uncontrolled Recursion via Special:Ask
CVE-2026-116872 7.5 HIGH Semantic MediaWiki 3.0.0 before 7.3.1 Denial of Service via Special:Search Compact Filters
CVE-2026-116878 7.5 HIGH Semantic MediaWiki 2.5.0 before 7.3.1 Resource Exhaustion via Special:PropertyLabelSimilar
CVE-2026-116890 7.3 HIGH Semantic MediaWiki 3.0.0 before 7.3.0 Missing Authorization via smwtask API
CVE-2026-116873 7.3 HIGH Semantic MediaWiki 7.3.0 Missing Authorization via smwtask API run-joblist and update
CVE-2026-116880 7.1 HIGH Semantic MediaWiki 3.0.0 before 7.3.1 CSRF via Special:SMWAdmin Maintenance Actions
CVE-2026-116876 7.1 HIGH Semantic MediaWiki 2.5.0 before 7.3.1 Missing Authorization via Is edit protected
CVE-2026-116877 6.5 MEDIUM Semantic MediaWiki 2.5.0 before 7.3.1 Resource Exhaustion via #set_recurring_event
CVE-2026-116874 6.1 MEDIUM SemanticMediaWiki 3.1.0 before 7.3.1 Reflected XSS via JsonResultPrinter Default Parameter
CVE-2026-116884 6.1 MEDIUM SemanticMediaWiki 5.0.0 before 7.3.1 Stored XSS via Tooltip Module data-* Attributes
CVE-2026-116881 6.1 MEDIUM Semantic MediaWiki 3.0.0 before 7.3.1 XSS via Property-Value Autocomplete
CVE-2026-116885 6.1 MEDIUM Semantic MediaWiki before 7.3.1 Reflected XSS via Special:SMWAdmin id Parameter
CVE-2026-116889 6.1 MEDIUM SemanticMediaWiki 2.5.0 before 7.3.1 Stored XSS via Special:Browse Code Property
CVE-2026-116875 6.1 MEDIUM SemanticMediaWiki 3.0.0 before 7.3.1 Reflected XSS via Special:Ask Separator Parameters
CVE-2026-116892 6.1 MEDIUM SemanticMediaWiki 3.1.0 before 7.3.1 Reflected XSS via Special:Search smw Profile
CVE-2026-116886 5.4 MEDIUM Semantic MediaWiki before 7.3.1 Stored XSS via External Identifier in Special:Browse
CVE-2026-116879 5.4 MEDIUM Semantic MediaWiki 7.3.0 before 7.3.1 Missing Authorization via smwtask Update Task
CVE-2026-116887 5.4 MEDIUM Semantic MediaWiki 3.0.0 before 7.3.1 Stored XSS via Special:Browse Keyword Property
CVE-2026-116883 4.8 MEDIUM Semantic MediaWiki 3.1.0 before 7.3.1 Stored XSS via Schema Descriptions
CVE-2026-116882 4.8 MEDIUM Semantic MediaWiki 4.2.0 before 7.3.1 Stored XSS via FacetedSearch Exploration Labels

Showing top 20 of 22 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

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