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CVE-2022-46180— Arbitrary HTML injection in discourse-mermaid-theme-component

Quick assessment

Affected
discourse discourse-mermaid-theme-component
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.

Discourse是一套开源的社区讨论平台。该平台包括社区、电子邮件和聊天室等功能。 Discourse discourse-mermaid-theme-component 1.0.0版本存在跨站脚本漏洞，攻击者利用该漏洞可注入任意HTML。

CVSS 5.0 · Medium EPSS 0.47% · P39
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I. Basic Information for CVE-2022-46180

Vulnerability Information
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Vulnerability Title
Arbitrary HTML injection in discourse-mermaid-theme-component
Source: CVE Program / CVE List V5
Vulnerability Description
Discourse Mermaid (discourse-mermaid-theme-component) allows users of Discourse, open-source forum software, to create graphs using the Mermaid syntax. Users of discourse-mermaid-theme-component version 1.0.0 who can create posts are able to inject arbitrary HTML on that post. The issue has been fixed on the `main` branch of the GitHub repository, with 1.1.0 named as a patched version. Admins can update the theme component through the admin UI. As a workaround, admins can temporarily disable discourse-mermaid-theme-component.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输出中的特殊元素转义处理不恰当(注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Discourse 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Discourse是一套开源的社区讨论平台。该平台包括社区、电子邮件和聊天室等功能。 Discourse discourse-mermaid-theme-component 1.0.0版本存在跨站脚本漏洞，攻击者利用该漏洞可注入任意HTML。
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
discourse discourse-mermaid-theme-component = 1.0.0 -

II. Public POCs for CVE-2022-46180

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III. Intelligence Information for CVE-2022-46180

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Patches & Fixes for CVE-2022-46180 (2)

Vendor Advisories for CVE-2022-46180 (1)

IV. Related Vulnerabilities

Same vendor: discourse
Same weakness: CWE-74

V. Comments for CVE-2022-46180

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