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CVE-2021-20810

Quick assessment

Affected
Six Apart Ltd. Movable Type
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.

Six Apart Movable Type（MT）是美国Six Apart公司的一套博客系统。该系统包括多用户、评论、引用和主题等功能。 Six Apart Movable Type 存在跨站脚本漏洞，该漏洞源于应用对资产列表屏幕中用户提供的数据清理不足。远程攻击者可以诱使受害者点击特制链接，并在易受攻击的网站上下文中在用户浏览器中执行任意 HTML 和脚本代码。

AI Predicted 6.1 Difficulty: Easy EPSS 0.90% · P58

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2021-20810

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Cross-site scripting vulnerability in Website Management screen of Movable Type (Movable Type 7 r.4903 and earlier (Movable Type 7 Series), Movable Type 6.8.0 and earlier (Movable Type 6 Series), Movable Type Advanced 7 r.4903 and earlier (Movable Type Advanced 7 Series), Movable Type Premium 1.44 and earlier, and Movable Type Premium Advanced 1.44 and earlier) allows remote attackers to inject arbitrary script or HTML via unspecified vectors.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Six Apart Movable Type 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Six Apart Movable Type（MT）是美国Six Apart公司的一套博客系统。该系统包括多用户、评论、引用和主题等功能。 Six Apart Movable Type 存在跨站脚本漏洞，该漏洞源于应用对资产列表屏幕中用户提供的数据清理不足。远程攻击者可以诱使受害者点击特制链接，并在易受攻击的网站上下文中在用户浏览器中执行任意 HTML 和脚本代码。
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
Six Apart Ltd. Movable Type Movable Type 7 r.4903 and earlier (Movable Type 7 Series), Movable Type 6.8.0 and earlier (Movable Type 6 Series), Movable Type Advanced 7 r.4903 and earlier (Movable Type Advanced 7 Series), Movable Type Premium 1.44 and earlier, and Movable Type Premium -

II. Public POCs for CVE-2021-20810

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-20810

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Vendor Advisories for CVE-2021-20810 (1)

Other References for CVE-2021-20810 (1)

Same Patch Batch · Six Apart Ltd. · 2021-08-26 · 8 CVEs total

CVE-2021-20808 Six Apart Movable Type 跨站脚本漏洞
CVE-2021-20809 Six Apart Movable Type 跨站脚本漏洞
CVE-2021-20811 Six Apart Movable Type 跨站脚本漏洞
CVE-2021-20812 Six Apart Movable Type 跨站脚本漏洞
CVE-2021-20813 Six Apart Movable Type 跨站脚本漏洞
CVE-2021-20814 Six Apart Movable Type 跨站脚本漏洞
CVE-2021-20815 Six Apart Movable Type 跨站脚本漏洞

IV. Related Vulnerabilities

Same product: Movable Type
Same vendor: Six Apart Ltd.

V. Comments for CVE-2021-20810

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