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CVE-2021-3866— Cross-site Scripting (XSS) - Stored in zulip/zulip

Quick assessment

Affected
zulip zulip/zulip
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.

Zulip是Zulip团队的一款功能强大的开源群聊应用程序。用于将实时聊天的即时性与线程对话的生产力优势相结合。 zulip 存在跨站脚本漏洞，该漏洞源于 zulip/zulip 存在跨站脚本漏洞。

AI Predicted 6.1 Difficulty: Easy EPSS 0.89% · P58
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I. Basic Information for CVE-2021-3866

Vulnerability Information
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Vulnerability Title
Cross-site Scripting (XSS) - Stored in zulip/zulip
Source: CVE Program / CVE List V5
Vulnerability Description
Cross-site Scripting (XSS) - Stored in GitHub repository zulip/zulip more than and including 44f935695d452cc3fb16845a0c6af710438b153d and prior to 3eb2791c3e9695f7d37ffe84e0c2184fae665cb6.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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
Zulip 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zulip是Zulip团队的一款功能强大的开源群聊应用程序。用于将实时聊天的即时性与线程对话的生产力优势相结合。 zulip 存在跨站脚本漏洞，该漏洞源于 zulip/zulip 存在跨站脚本漏洞。
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
zulip zulip/zulip 44f935695d452cc3fb16845a0c6af710438b153d ~ unspecified -

II. Public POCs for CVE-2021-3866

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-3866

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Patches & Fixes for CVE-2021-3866 (1)

Vendor Advisories for CVE-2021-3866 (1)

Security Blog Posts for CVE-2021-3866 (1)

IV. Related Vulnerabilities

Same product: zulip/zulip
Same vendor: zulip
Same weakness: CWE-79

V. Comments for CVE-2021-3866

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