CVE-2022-1002— HTML Injection while inviting Guests
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 6.3.0存在安全漏洞，该漏洞允许具有特殊权限的注册用户邀请访客用户在电子邮件邀请中注入未转义的 HTML 内容。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2022-1002
Vulnerability Information
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Vulnerability Title
HTML Injection while inviting Guests
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost 6.3.0 and earlier fails to properly sanitize the HTML content in the email invitation sent to guest users, which allows registered users with special permissions to invite guest users to inject unescaped HTML content in the email invitations.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
Web页面中脚本相关HTML标签转义处理不恰当(基本跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Mattermost 跨站脚本漏洞
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 6.3.0存在安全漏洞，该漏洞允许具有特殊权限的注册用户邀请访客用户在电子邮件邀请中注入未转义的 HTML 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 | unspecified ~ 6.3 | - |
|
II. Public POCs for CVE-2022-1002
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2022-1002 (2)
-
https://mattermost.com/security-updates/ x_refsource_MISC
-
https://hackerone.com/reports/1443567 x_refsource_MISC
IV. Related Vulnerabilities
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Same vendor: Mattermost
-
CVE-2026-96260
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CVE-2026-96259
Mattermost server-side request forgery via OAuth endpoints c -
CVE-2026-95666
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CVE-2026-12284
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Same weakness: CWE-80
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V. Comments for CVE-2022-1002
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