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CVE-2025-22449— Access control flaw for team admins allows unauthorized team additions

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 9.11.5版本及之前的9.11.x版本存在安全漏洞，该漏洞源于未正确执行邀请权限，导致团队管理员可以邀请无权限用户加入其团队。

CVSS 3.8 · Low EPSS 0.28% · P20
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I. Basic Information for CVE-2025-22449

Vulnerability Information
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Vulnerability Title
Access control flaw for team admins allows unauthorized team additions
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost versions 9.11.x <= 9.11.5 fail to enforce invite permissions, which allows team admins, with no permission to invite users to their team, to invite users by updating the "allow_open_invite" field via making their team public.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
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 9.11.5版本及之前的9.11.x版本存在安全漏洞，该漏洞源于未正确执行邀请权限，导致团队管理员可以邀请无权限用户加入其团队。
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 9.11.0 ~ 9.11.5 -

II. Public POCs for CVE-2025-22449

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III. Intelligence Information for CVE-2025-22449

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Same Patch Batch · Mattermost · 2025-01-09 · 3 CVEs total

CVE-2025-20033 4.3 MEDIUM DoS via custom post type for sysconsole plugin readers
CVE-2025-22445 3.5 LOW Misleading UI for undefined admin console settings in Calls causes security confusion

IV. Related Vulnerabilities

Same product: Mattermost
Same vendor: Mattermost
Same weakness: CWE-863

V. Comments for CVE-2025-22449

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