CVE-2023-2792— Ephemeral messages return private channel contents in permalink previews
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2023-2792
Vulnerability Information
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Vulnerability Title
Ephemeral messages return private channel contents in permalink previews
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost fails to sanitize ephemeral error messages, allowing an attacker to obtain arbitrary message contents by a specially crafted /groupmsg command.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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，该漏洞源于无法清理临时错误消息，导致攻击者可以通过特制命令获取任意消息内容。
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 ~ 7.1.9 | - |
II. Public POCs for CVE-2023-2792
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2023-2792 (1)
Same Patch Batch · Mattermost · 2023-06-16 · 11 CVEs total
| CVE-2023-2793 | 6.5 MEDIUM | Stack exhaustion in PreparePostForClientWithEmbedsAndImages |
| CVE-2023-2787 | 6.5 MEDIUM | Collapsed Reply Threads APIs leak message contents from private channels |
| CVE-2023-2788 | 6.2 MEDIUM | Deactivated user can retain access using oauth2 api |
| CVE-2023-2785 | 4.3 MEDIUM | Specially crafted search query can cause large log entries in postgres |
| CVE-2023-2831 | 4.3 MEDIUM | Denial of Service while unescaping a Markdown string |
| CVE-2023-2791 | 4.3 MEDIUM | Playbooks lets you edit arbitrary posts |
| CVE-2023-2786 | 4.3 MEDIUM | Channel commands execution doesn't properly verify permissions |
| CVE-2023-2783 | 4.3 MEDIUM | App Framework does not checks for the secret provided in the incoming webhook request |
| CVE-2023-2784 | 4.2 MEDIUM | Apps Framework allows install requests from regular members via an internal path |
| CVE-2023-2797 | 3.1 LOW | Path traversal in GitHub plugin's code preview feature |
IV. Related Vulnerabilities
Same product: Mattermost
- CVE-2026-14298
Denial of service via resource exhaustion in Mattermost - CVE-2026-7521
SAML certificate deletion allows path traversal to delete ar - CVE-2026-10819
Mattermost Server Denial of Service via Animated GIF Emoji U - CVE-2026-10600
Denial of service via unbounded document content extraction - CVE-2026-8075
Posting a malicious markdown image crashes the Mattermost De
Same vendor: Mattermost
- CVE-2026-14298
Denial of service via resource exhaustion in Mattermost - CVE-2026-7521
SAML certificate deletion allows path traversal to delete ar - CVE-2026-10819
Mattermost Server Denial of Service via Animated GIF Emoji U - CVE-2026-10600
Denial of service via unbounded document content extraction - CVE-2026-8075
Posting a malicious markdown image crashes the Mattermost De
Same weakness: CWE-200
- CVE-2026-73047
siyuan before v3.7.4 Server-Side Template Injection via attr - CVE-2026-19837
Webkul Bagisto Customer Search search information disclosure - CVE-2026-66272
Dell Wyse Management Suite 早期版本存在关键功能缺身份验证漏洞致信息泄露 - CVE-2026-72834
filebrowser before 2.63.19 Permission Bypass via checksum - CVE-2026-73304
Budibase: SSO OAuth2 Token Leakage via User Metadata Endpoin
V. Comments for CVE-2023-2792
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