CVE-2023-48732— Keywords that trigger mentions are leaked to other users
Quick assessment
Affected
Mattermost Mattermost
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.
Mattermost是美国Mattermost公司的一个开源协作平台。 Mattermost存在安全漏洞，该漏洞源于无法将WebSocket响应范围分别扩展到每个用户，导致WebSocket将关于谁被通知了帖子的信息广播给频道中的其他人。
Possible ATT&CK Techniques 1 AI
T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2023-48732
Vulnerability Information
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Vulnerability Title
Keywords that trigger mentions are leaked to other users
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost fails to scope the WebSocket response around notified users to a each user separately resulting in the WebSocket broadcasting the information about who was notified about a post to everyone else in the channel.
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
Mattermost 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mattermost是美国Mattermost公司的一个开源协作平台。 Mattermost存在安全漏洞，该漏洞源于无法将WebSocket响应范围分别扩展到每个用户，导致WebSocket将关于谁被通知了帖子的信息广播给频道中的其他人。
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 |
|---|---|---|---|---|
| Mattermost | Mattermost | 0 ~ 8.1.6 | - |
|
II. Public POCs for CVE-2023-48732
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Mattermost · 2024-01-02 · 3 CVEs total
| CVE-2023-47858 | 4.3 MEDIUM | Details of archived public channels are leaked to members of another team |
| CVE-2023-50333 | 3.7 LOW | Lack of restriction to manage group names for freshly demoted guests |
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CVE-2026-96260
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Same weakness: CWE-200
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V. Comments for CVE-2023-48732
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