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CVE-2021-41140— Reactions leak for secure category topics and private messages

Quick assessment

Affected
discourse discourse-reactions
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 platform的Discourse-reactions插件 0.2之前版本存在安全漏洞，该漏洞源于用户对安全主题和私人消息的反应是可见的。这个问题在0.2版本得到了修补。建议无法更新的用户禁用管理面板中的Distanced reactions插件。

CVSS 5.3 · Medium EPSS 0.93% · P60

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2021-41140

Vulnerability Information
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Vulnerability Title
Reactions leak for secure category topics and private messages
Source: CVE Program / CVE List V5
Vulnerability Description
Discourse-reactions is a plugin for the Discourse platform that allows user to add their reactions to the post. In affected versions reactions given by user to secure topics and private messages are visible. This issue is patched in version 0.2 of discourse-reaction. Users who are unable to update are advised to disable the Discourse-reactions plugin in admin panel.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
将资源暴露给错误范围
Source: CVE Program / CVE List V5
Vulnerability Title
Discourse 信息泄露漏洞
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 platform的Discourse-reactions插件 0.2之前版本存在安全漏洞，该漏洞源于用户对安全主题和私人消息的反应是可见的。这个问题在0.2版本得到了修补。建议无法更新的用户禁用管理面板中的Distanced reactions插件。
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-reactions < 0.2 -

II. Public POCs for CVE-2021-41140

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III. Intelligence Information for CVE-2021-41140

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Patches & Fixes for CVE-2021-41140 (1)

Vendor Advisories for CVE-2021-41140 (1)

IV. Related Vulnerabilities

Same product: discourse-reactions
Same vendor: discourse
Same weakness: CWE-668

V. Comments for CVE-2021-41140

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