CVE-2026-103047— XSS through i18n message in CentralAuth
Quick assessment
Affected
The Wikimedia Foundation Mediawiki - CentralAuth 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.
在网页生成过程中对输入进行不当中和（即“跨站脚本”，Cross-Site Scripting, XSS）漏洞存在于维基媒体基金会（The Wikimedia Foundation）的 MediaWiki CentralAuth 扩展程序中，可导致存储型跨站脚本攻击（Stored XSS）。 该问题影响以下版本的 MediaWiki CentralAuth 扩展程序：1.46.1 之前的版本、1.45.5 之前的版本以及 1.43.10 之前的版本。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1189 · Drive-by Compromise
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I. Basic Information for CVE-2026-103047
Vulnerability Information
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Vulnerability Title
XSS through i18n message in CentralAuth
Source: CVE Program / CVE List V5
Vulnerability Description
Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - CentralAuth extension allows Stored XSS.
This issue affects Mediawiki - CentralAuth extension: before 1.46.1, 1.45.5, 1.43.10.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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 |
|---|---|---|---|---|
| The Wikimedia Foundation | Mediawiki - CentralAuth extension | 0 ~ 1.46.1, 1.45.5, 1.43.10 | - |
|
II. Public POCs for CVE-2026-103047
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2026-103047 (2)
-
https://gerrit.wikimedia.org/r/c/1309285 mitigation
-
https://phabricator.wikimedia.org/T244682 issue-tracking
Same Patch Batch · The Wikimedia Foundation · 2026-09-29 · 8 CVEs total
| CVE-2026-103046 | WikifunctionsFragmentRenderer does unsafe string replacements on user-provided HTML | |
| CVE-2026-103044 | EasyTimeline should not serve image maps as application/xml | |
| CVE-2026-103045 | XSS in Refreshed skin | |
| CVE-2026-103050 | Stored i18n XSS in MassMessage | |
| CVE-2026-103048 | Open Redirect in Special:Book | |
| CVE-2026-103049 | XSS in Cargo's Special:CargoQuery page due to unsanitized table headers | |
| CVE-2026-103051 | Stored i18n XSSs in CentralNotice |
IV. Related Vulnerabilities
V. Comments for CVE-2026-103047
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