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CVE-2021-39186— Improper Input Validation in GlobalNewFiles

Quick assessment

Affected
miraheze GlobalNewFiles
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.

GlobalNewFiles是美国维基媒体（MediaWiki）基金会的一个扩展，提供了一个特殊的页面在全球范围内查看wiki farm的所有文件。 GlobalNewFiles 存在输入验证错误漏洞，该漏洞源于GlobalNewFiles 特殊页面的用户名列容易受到存储型 XSS 的攻击。

CVSS 4.3 · Medium EPSS 1.01% · P60

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2021-39186

Vulnerability Information
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Vulnerability Title
Improper Input Validation in GlobalNewFiles
Source: CVE Program / CVE List V5
Vulnerability Description
GlobalNewFiles is a MediaWiki extension maintained by Miraheze. Prior to commit number cee254e1b158cdb0ddbea716b1d3edc31fa4fb5d, the username column of the GlobalNewFiles special page is vulnerable to a stored XSS. Commit number cee254e1b158cdb0ddbea716b1d3edc31fa4fb5d contains a patch. As a workaround, one may disallow <,> (or other characters required to insert html/js) from being used in account names so an XSS is not possible.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
MediaWiki GlobalNewFiles 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GlobalNewFiles是美国维基媒体（MediaWiki）基金会的一个扩展，提供了一个特殊的页面在全球范围内查看wiki farm的所有文件。 GlobalNewFiles 存在输入验证错误漏洞，该漏洞源于GlobalNewFiles 特殊页面的用户名列容易受到存储型 XSS 的攻击。
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
miraheze GlobalNewFiles < cee254e1b158cdb0ddbea716b1d3edc31fa4fb5d -

II. Public POCs for CVE-2021-39186

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III. Intelligence Information for CVE-2021-39186

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Patches & Fixes for CVE-2021-39186 (1)

Vendor Advisories for CVE-2021-39186 (1)

Other References for CVE-2021-39186 (1)

IV. Related Vulnerabilities

Same product: GlobalNewFiles
Same vendor: miraheze
Same weakness: CWE-20

V. Comments for CVE-2021-39186

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