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CVE-2021-23980

Quick assessment

Affected
Mozilla Mozilla Bleach
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.

Python Bleach是一款基于Python的HTML清理库。 Python Bleach 存在跨站脚本漏洞，攻击者可利用该漏洞可以触发跨站点脚本，以便在网站上下文中运行JavaScript代码。

AI Predicted 5.3 Difficulty: Easy EPSS 0.48% · P39

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript
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I. Basic Information for CVE-2021-23980

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A mutation XSS affects users calling bleach.clean with all of: svg or math in the allowed tags p or br in allowed tags style, title, noscript, script, textarea, noframes, iframe, or xmp in allowed tags the keyword argument strip_comments=False Note: none of the above tags are in the default allowed tags and strip_comments defaults to True.
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
Python Bleach 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Python Bleach是一款基于Python的HTML清理库。 Python Bleach 存在跨站脚本漏洞，攻击者可利用该漏洞可以触发跨站点脚本，以便在网站上下文中运行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
Mozilla Mozilla Bleach unspecified ~ 3.3.0 -

II. Public POCs for CVE-2021-23980

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III. Intelligence Information for CVE-2021-23980

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Vendor Advisories for CVE-2021-23980 (2)

Same Patch Batch · Mozilla · 2023-02-16 · 5 CVEs total

CVE-2019-17003 Mozilla Firefox 跨站脚本漏洞
CVE-2020-12413 Mozilla Firefox 信息泄露漏洞
CVE-2020-6817 Python Bleach 安全漏洞
CVE-2021-43529 Mozilla Thunderbird 缓冲区错误漏洞

IV. Related Vulnerabilities

Same product: Mozilla Bleach
Same vendor: Mozilla

V. Comments for CVE-2021-23980

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