CVE-2023-5967— Denial of Service via crashing the Calls Plugin
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I. Basic Information for CVE-2023-5967
Vulnerability Information
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Vulnerability Title
Denial of Service via crashing the Calls Plugin
Source: NVD (National Vulnerability Database)
Vulnerability Description
Mattermost fails to properly validate requests to the Calls plugin, allowing an attacker sending a request without a User Agent header to cause a panic and crash the Calls plugin
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
对因果或异常条件的不恰当检查
Source: NVD (National Vulnerability Database)
Vulnerability Title
Mattermost 代码问题漏洞
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存在安全漏洞，该漏洞源于没有正确验证Calls插件的请求，导致攻击者可以在发送没有User Agent标头的请求时使Calls插件崩溃。
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 ~ 8.1.2 | - |
II. Public POCs for CVE-2023-5967
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Mattermost · 2023-11-06 · 3 CVEs total
| CVE-2023-5969 | 5.3 MEDIUM | Denial of Service via Link Preview in /api/v4/redirect_location |
| CVE-2023-5968 | 4.9 MEDIUM | Password hash in response body after username update |
IV. Related Vulnerabilities
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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-754
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V. Comments for CVE-2023-5967
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