CVE-2023-3615— Lack of server certificate validation in websockets connection
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I. Basic Information for CVE-2023-3615
Vulnerability Information
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Vulnerability Title
Lack of server certificate validation in websockets connection
Source: NVD (National Vulnerability Database)
Vulnerability Description
Mattermost iOS app fails to properly validate the server certificate while initializing the TLS connection allowing a network attacker to intercept the WebSockets connection.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
证书验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Mattermost 信任管理问题漏洞
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 iOS存在安全漏洞，该漏洞源于在初始化TLS连接时无法正确验证服务器证书，从而允许攻击者拦截WebSockets连接。
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 iOS app | 0 ~ 2.5.0 | - |
II. Public POCs for CVE-2023-3615
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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Same Patch Batch · Mattermost · 2023-07-17 · 13 CVEs total
| CVE-2023-3581 | 6.2 MEDIUM | WebSockets accept connections from HTTPS origin |
| CVE-2023-3591 | 4.8 MEDIUM | Lack of previous password reset tokens on new token creation |
| CVE-2023-3582 | 4.3 MEDIUM | Lack of channel membership check when linking a board to a channel |
| CVE-2023-3585 | 4.3 MEDIUM | channel DoS by sharing a boards link |
| CVE-2023-3614 | 4.3 MEDIUM | Denial of Service via specially crafted gif image |
| CVE-2023-3593 | 4.3 MEDIUM | Server crash via a specially crafted markdown input |
| CVE-2023-3586 | 4.2 MEDIUM | Disabling publicly-shared boards does not disable existing publicly available board links |
| CVE-2023-3577 | 3.5 LOW | Limited blind SSRF to localhost/intranet in interactive dialog implementation |
| CVE-2023-3613 | 3.5 LOW | Guest accounts invited and added to channels by Welcomebot plugin |
| CVE-2023-3584 | 3.1 LOW | Member can create team with team override scheme |
| CVE-2023-3590 | 3.1 LOW | Deleted attachments in Boards remain accessible |
| CVE-2023-3587 | 2.7 LOW | Inconsistent state in UI after boards permission change by system admin |
IV. Related Vulnerabilities
Same vendor: Mattermost
- CVE-2026-3590
Race Condition in Guest Magic Link Authentication Allows Tok - CVE-2026-28741
CSRF Protection Bypass Allows Updating a User's Authenticati - CVE-2026-27769
Connected Workspaces: Malicious remote server can manipulate - CVE-2026-24661
Unbounded Request Body Read in MS Teams Plugin {{/changes}} - CVE-2026-21388
Unbounded Request Body Read in MS Teams Plugin {{/lifecycle}
Same weakness: CWE-295
V. Comments for CVE-2023-3615
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