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CVE-2023-49099— Discourse secure uploads accessible to guests even when login is required

Quick assessment

Affected
discourse discourse
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 3.2.0.beta4之前、3.1.4之前版本存在访问控制错误漏洞，该漏洞源于在特殊的情况下，访客用户也可以访问与帖子关联的安全上传 URL。

CVSS 3.1 · Low EPSS 0.32% · P23

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2023-49099

Vulnerability Information
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Vulnerability Title
Discourse secure uploads accessible to guests even when login is required
Source: CVE Program / CVE List V5
Vulnerability Description
Discourse is a platform for community discussion. Under very specific circumstances, secure upload URLs associated with posts can be accessed by guest users even when login is required. This vulnerability has been patched in 3.2.0.beta4 and 3.1.4.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Discourse 访问控制错误漏洞
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 3.2.0.beta4之前、3.1.4之前版本存在访问控制错误漏洞，该漏洞源于在特殊的情况下，访客用户也可以访问与帖子关联的安全上传 URL。
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 < 3.1.4 -

II. Public POCs for CVE-2023-49099

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III. Intelligence Information for CVE-2023-49099

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Patches & Fixes for CVE-2023-49099 (1)

Vendor Advisories for CVE-2023-49099 (1)

Same Patch Batch · discourse · 2024-01-12 · 4 CVEs total

CVE-2023-48297 8.6 HIGH Discourse vulnerable to unlimited mentioned users in message serializer
CVE-2024-21655 4.3 MEDIUM Insufficient control of custom field value sizes
CVE-2023-49098 3.5 LOW Reaction data for user notifications exposed in Discourse-reactions

IV. Related Vulnerabilities

Same product: discourse
Same vendor: discourse
Same weakness: CWE-284

V. Comments for CVE-2023-49099

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