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CVE-2025-53370— Citizen stored XSS vulnerability through short descriptions

Quick assessment

Affected
StarCitizenTools mediawiki-skins-Citizen
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Citizen是Star Citizen Wiki团队的一款美观、易用、响应迅速的MediaWiki皮肤。 Citizen 1.9.4至3.4.0之前版本存在跨站脚本漏洞，该漏洞源于ShortDescription扩展插入的短描述未正确清理，可能导致任意HTML注入。

CVSS 8.6 · High EPSS 0.32% · P24

Possible ATT&CK Techniques 1 AI

T1059.001 · PowerShell
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I. Basic Information for CVE-2025-53370

Vulnerability Information
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Vulnerability Title
Citizen stored XSS vulnerability through short descriptions
Source: CVE Program / CVE List V5
Vulnerability Description
Citizen is a MediaWiki skin that makes extensions part of the cohesive experience. From versions 1.9.4 to before 3.4.0, short descriptions set via the ShortDescription extension are inserted as raw HTML by the Citizen skin, allowing any user to insert arbitrary HTML into the DOM by editing a page. This issue has been patched in version 3.4.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A: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
Citizen 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Citizen是Star Citizen Wiki团队的一款美观、易用、响应迅速的MediaWiki皮肤。 Citizen 1.9.4至3.4.0之前版本存在跨站脚本漏洞，该漏洞源于ShortDescription扩展插入的短描述未正确清理，可能导致任意HTML注入。
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
StarCitizenTools mediawiki-skins-Citizen >= 65a7ffd927467c8c3557146d1ac6de62b0369b6c, < c85a40bddc8651fff66df83a72debddcb34f0521 -

II. Public POCs for CVE-2025-53370

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 10446 chars
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III. Intelligence Information for CVE-2025-53370

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Same Patch Batch · StarCitizenTools · 2025-07-03 · 3 CVEs total

CVE-2025-53369 8.6 HIGH Citizen Short Description stored XSS vulnerability through wikitext
CVE-2025-53368 8.6 HIGH Citizen is vulnerable to stored XSS attack in the legacy search bar

IV. Related Vulnerabilities

Same product: mediawiki-skins-Citizen
Same vendor: StarCitizenTools
Same weakness: CWE-79

V. Comments for CVE-2025-53370

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