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CVE-2020-15275— malicious SVG attachment causing stored XSS vulnerability in MoinMoin

Quick assessment

Affected
moinwiki moin-1.9
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.

MoinMoin是一套开源的、可扩展的基于Python环境的wiki引擎程序。 MoinMoin 1.9.11之前版本中存在跨站脚本漏洞，攻击者可利用该漏洞通过SVG附件触发跨站点脚本，以便在web站点的上下文中运行JavaScript代码。

CVSS 8.7 · High EPSS 1.75% · P76

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2020-15275

Vulnerability Information
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Vulnerability Title
malicious SVG attachment causing stored XSS vulnerability in MoinMoin
Source: CVE Program / CVE List V5
Vulnerability Description
MoinMoin is a wiki engine. In MoinMoin before version 1.9.11, an attacker with write permissions can upload an SVG file that contains malicious javascript. This javascript will be executed in a user's browser when the user is viewing that SVG file on the wiki. Users are strongly advised to upgrade to a patched version. MoinMoin Wiki 1.9.11 has the necessary fixes and also contains other important fixes.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
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
MoinMoin 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MoinMoin是一套开源的、可扩展的基于Python环境的wiki引擎程序。 MoinMoin 1.9.11之前版本中存在跨站脚本漏洞，攻击者可利用该漏洞通过SVG附件触发跨站点脚本，以便在web站点的上下文中运行JavaScript代码。
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
moinwiki moin-1.9 < 1.9.11 -

II. Public POCs for CVE-2020-15275

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III. Intelligence Information for CVE-2020-15275

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Patches & Fixes for CVE-2020-15275 (1)

Vendor Advisories for CVE-2020-15275 (1)

Other References for CVE-2020-15275 (2)

IV. Related Vulnerabilities

Same weakness: CWE-79

V. Comments for CVE-2020-15275

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