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CVE-2024-56197— Users can see other user's tagged PMs in Discourse

CVSS 2.2 · Low EPSS 0.14% · P34
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I. Basic Information for CVE-2024-56197

Vulnerability Information
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Vulnerability Title
Users can see other user's tagged PMs in Discourse
Source: NVD (National Vulnerability Database)
Vulnerability Description
Discourse is an open source platform for community discussion. PM titles and metadata can be read by other users when the "PM tags allowed for groups" option is enabled, the other user is a member of a group added to this option, and the PM has been tagged. This issue has been patched in the latest `stable`, `beta` and `tests-passed` versions of Discourse. Users are advised to upgrade. Users unable to upgrade should remove all groups from the the "PM tags allowed for groups" option.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
信息暴露
Source: NVD (National Vulnerability Database)
Vulnerability Title
Discourse 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Discourse是Discourse开源的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存在信息泄露漏洞，该漏洞源于当启用了允许为组添加PM标签的选项时，其他也是加入了此选项的组成员的用户可以读取私信标题和元数据。
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

VendorProductAffected VersionsCPESubscribe
discoursediscourse stable: <= 3.3.3 -

II. Public POCs for CVE-2024-56197

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III. Intelligence Information for CVE-2024-56197

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Same Patch Batch · discourse · 2025-02-04 · 9 CVEs total

CVE-2024-559488.2 HIGHAnonymous cache poisoning via XHR requests in Discourse
CVE-2025-230238.2 HIGHAnonymous cache poisoning via request headers in Discourse
CVE-2024-563286.5 MEDIUMHTMLi(XSS without CSP) via Onebox urls in Discourse
CVE-2025-226026.5 MEDIUMStored DOM-based XSS (without CSP) via video placeholders in Discourse
CVE-2024-532664.3 MEDIUMCross-site Scripting (XSS) via topic titles when CSP disabled in Discourse
CVE-2024-538514.3 MEDIUMPartial denial of service via inline oneboxes in Discourse
CVE-2024-539944.3 MEDIUMPotential bypass of chat permissions in Discourse
CVE-2025-226013.1 LOWClient Side Path Traversal using activate account route in Discourse

IV. Related Vulnerabilities

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

V. Comments for CVE-2024-56197

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