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CVE-2025-62663— Stored XSS through a system message in UploadWizard

Quick assessment

Affected
The Wikimedia Foundation Mediawiki - UploadWizard 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.

Mediawiki - UploadWizard Extension是Mediawiki开源的一个文件上传插件。 Mediawiki - UploadWizard Extension master版本至1.39之前版本存在安全漏洞，该漏洞源于Web页面生成期间输入中和不当，可能导致存储型跨站脚本。

AI Predicted 6.1 Difficulty: Easy EPSS 0.45% · P37
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I. Basic Information for CVE-2025-62663

Vulnerability Information
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Vulnerability Title
Stored XSS through a system message in UploadWizard
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in The Wikimedia Foundation Mediawiki - UploadWizard Extension allows Stored XSS.This issue affects Mediawiki - UploadWizard Extension: from master before 1.39.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L
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
Vulnerability Title
Mediawiki - UploadWizard Extension 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mediawiki - UploadWizard Extension是Mediawiki开源的一个文件上传插件。 Mediawiki - UploadWizard Extension master版本至1.39之前版本存在安全漏洞，该漏洞源于Web页面生成期间输入中和不当，可能导致存储型跨站脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
The Wikimedia Foundation Mediawiki - UploadWizard Extension master ~ 1.39 -

II. Public POCs for CVE-2025-62663

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III. Intelligence Information for CVE-2025-62663

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Same Patch Batch · The Wikimedia Foundation · 2025-10-18 · 10 CVEs total

CVE-2025-11937 Stored XSS through a system message in SecurePoll
CVE-2025-62666 DoS vector through the cirrusbuilddoc query API
CVE-2025-62667 Stored XSS through article extracts in GrowthExperiments
CVE-2025-62668 Insufficient permission checks in action=growthsetmentor
CVE-2025-62669 UserInfoCard: activeLocalBlocksAllWikis does not do permissions checks
CVE-2025-62670 Stored XSS through a system message in FlexDiagrams
CVE-2025-62671 Stored XSS through wikitext in Cargo
CVE-2025-62662 Stored XSS through system messages in AdvancedSearch
CVE-2025-62664 Stored XSS through a system message in ImageRating

IV. Related Vulnerabilities

Same product: Mediawiki - UploadWizard Extension
Same vendor: The Wikimedia Foundation
Same weakness: CWE-79

V. Comments for CVE-2025-62663

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