CVE-2021-37862
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 6.0及之前版本存在安全漏洞，攻击者可以通过精心制作的邀请令牌诱使用户使用攻击者控制的电子邮件地址进行注册。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-37862
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost 6.0 and earlier fails to sufficiently validate the email address during registration, which allows attackers to trick users into signing up using attacker-controlled email addresses via crafted invitation token.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对因果或异常条件的不恰当检查
Source: CVE Program / CVE List V5
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 6.0及之前版本存在安全漏洞，攻击者可以通过精心制作的邀请令牌诱使用户使用攻击者控制的电子邮件地址进行注册。
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 | unspecified ~ 6.0 | - |
|
II. Public POCs for CVE-2021-37862
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2021-37862 (2)
-
https://mattermost.com/security-updates/ x_refsource_MISC
-
https://hackerone.com/reports/1357013 x_refsource_MISC
IV. Related Vulnerabilities
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Same vendor: Mattermost
-
CVE-2026-96260
Mattermost server missing request body size limit on plugin -
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Mattermost server-side request forgery via OAuth endpoints c -
CVE-2026-95666
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CVE-2026-12284
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Mattermost Desktop App plugin popout scheme validation bypas
Same weakness: CWE-754
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V. Comments for CVE-2021-37862
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