CVE-2023-3613— Guest accounts invited and added to channels by Welcomebot plugin
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2023-3613
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Guest accounts invited and added to channels by Welcomebot plugin
Source: NVD (National Vulnerability Database)
Vulnerability Description
Mattermost WelcomeBot plugin fails to to validate the membership status when inviting or adding users to channels allowing guest accounts to be added or invited to channels by default.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不正确
Source: NVD (National Vulnerability Database)
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 WelcomeBot plugin存在安全漏洞，该漏洞源于该插件无法验证会员状态，允许将访客添加或邀请到频道。
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 Plugins | 0 ~ 7.8.5 | - |
II. Public POCs for CVE-2023-3613
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2023-3613
请登录查看更多情报信息。
Same Patch Batch · Mattermost · 2023-07-17 · 13 CVEs total
| CVE-2023-3615 | 8.1 HIGH | Lack of server certificate validation in websockets connection |
| 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-2023-3584 | 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-863
- CVE-2026-42571
Privilege Escalation Attack affecting Pelican Web UI - CVE-2025-15633
HCL BigFix WebUI is affected by an improper authorization vu - CVE-2026-42296
Argo Workflows has incomplete fix for CVE-2026-31892: hostNe - CVE-2025-66170
Apache CloudStack: Any user can list backups that they shoul - CVE-2026-41903
FreeScout IDOR Vulnerability: PERM_EDIT_USERS allows modifyi
V. Comments for CVE-2023-3613
No comments yet