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CVE-2022-46162— Discourse BBCode plugin vulnerable to arbitrary CSS injection

Quick assessment

Affected
discourse discourse-bbcode
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 BBCode存在跨站脚本漏洞，该漏洞源于其允许攻击者利用多个CSS注入。

CVSS 8.8 · High EPSS 1.19% · P68

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2022-46162

Vulnerability Information
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Vulnerability Title
Discourse BBCode plugin vulnerable to arbitrary CSS injection
Source: CVE Program / CVE List V5
Vulnerability Description
discourse-bbcode is the official BBCode plugin for Discourse. Prior to commit 91478f5, CSS injection can occur when rendering content generated with the discourse-bccode plugin. This vulnerability only affects sites which have the discourse-bbcode plugin installed and enabled. This issue is patched in commit 91478f5. As a workaround, ensure that the Content Security Policy is enabled and monitor any posts that contain bbcode.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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 BBCode存在跨站脚本漏洞，该漏洞源于其允许攻击者利用多个CSS注入。
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-bbcode < 91478f5cfecdcc43cf85b997168a8ecfd0f8df90 -

II. Public POCs for CVE-2022-46162

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III. Intelligence Information for CVE-2022-46162

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Patches & Fixes for CVE-2022-46162 (1)

Vendor Advisories for CVE-2022-46162 (1)

IV. Related Vulnerabilities

Same vendor: discourse
Same weakness: CWE-74