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CVE-2026-103585— attacker-controlled javascript license URL via XSS

Quick assessment

Affected
The Wikimedia Foundation MediaWiki MediaSearch extension
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.

维基媒体基金会（The Wikimedia Foundation）的 MediaWiki MediaSearch 扩展存在一个“网页中未正确中和脚本相关 HTML 标签（基础型 XSS）”的漏洞，可导致跨站脚本攻击（XSS）。 该问题影响 MediaWiki MediaSearch 扩展的以下版本：1.46、1.45 和 1.43。

CVSS 1.2 · Low
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I. Basic Information for CVE-2026-103585

Vulnerability Information
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Vulnerability Title
attacker-controlled javascript license URL via XSS
Source: CVE Program / CVE List V5
Vulnerability Description
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki MediaSearch extension allows Cross-Site Scripting (XSS). This issue affects MediaWiki MediaSearch extension: 1.46, 1.45, and 1.43.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/S:N/AU:Y/R:U/V:D/RE:M/U:Amber
Source: CVE Program / CVE List V5
Vulnerability Type
Web页面中脚本相关HTML标签转义处理不恰当(基本跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
The Wikimedia Foundation MediaWiki MediaSearch extension 1.46 -

II. Public POCs for CVE-2026-103585

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III. Intelligence Information for CVE-2026-103585

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Other References for CVE-2026-103585 (2)

Same Patch Batch · The Wikimedia Foundation · 2026-09-30 · 12 CVEs total

CVE-2026-103446 7.4 HIGH WikiLambda exposes anonymous execution of unsaved Abstract Wikipedia fragments
CVE-2026-103441 7.2 HIGH Unauthenticated arbitrary file deletion through Wikibase serialized entity parsing
CVE-2026-103442 7.2 HIGH MergeAccount PHP object injection via session-key substitution
CVE-2026-103440 1.2 LOW pagetriagelist discloses suppressed reviewer usernames
CVE-2026-103445 1.2 LOW Stored XSS through PageForms #autoedit redirect links
CVE-2026-103443 1.1 LOW API permits session-seeded javascript URL XSS
CVE-2026-103444 1.1 LOW Stored XSS through system messages in WikiForum
CVE-2026-103437 1.1 LOW ReadingLists imported metadata permits JavaScript URL XSS
CVE-2026-103584 1.1 LOW attacker-controlled javascript license URL via XSS
CVE-2026-103438 0.3 LOW Various rawParams() and escaped() updates to prevent XSS in Wikistories extension
CVE-2026-103439 0.3 LOW Various rawParams() and escaped() updates to prevent XSS in Wikibase extension

IV. Related Vulnerabilities

Same vendor: The Wikimedia Foundation
Same weakness: CWE-80

V. Comments for CVE-2026-103585

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