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CVE-2024-24817— User can see invitees in events created in PMs and private categories

Quick assessment

Affected
discourse discourse-calendar
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 Calendar 0.4之前版本存在安全漏洞，该漏洞源于允许任何人在PM和私有类别创建的活动中查看受邀者。

CVSS 4.3 · Medium EPSS 0.42% · P36

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2024-24817

Vulnerability Information
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Vulnerability Title
User can see invitees in events created in PMs and private categories
Source: CVE Program / CVE List V5
Vulnerability Description
Discourse Calendar adds the ability to create a dynamic calendar in the first post of a topic on the open-source discussion platform Discourse. Prior to version 0.4, event invitees created in topics in private categories or PMs (private messages) can be retrieved by anyone, even if they're not logged in. This problem is resolved in version 0.4 of the discourse-calendar plugin. While no known workaround is available, putting the site behind `login_required` will disallow this endpoint to be used by anonymous users, but logged in users can still get the list of invitees in the private topics.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Discourse 安全漏洞
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 Calendar 0.4之前版本存在安全漏洞，该漏洞源于允许任何人在PM和私有类别创建的活动中查看受邀者。
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-calendar < 0.4 -

II. Public POCs for CVE-2024-24817

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III. Intelligence Information for CVE-2024-24817

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Patches & Fixes for CVE-2024-24817 (1)

Vendor Advisories for CVE-2024-24817 (1)

IV. Related Vulnerabilities

Same product: discourse-calendar
Same vendor: discourse
Same weakness: CWE-200