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I. Basic Information for CVE-2025-27538
Vulnerability Information

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Vulnerability Title
MFA Enforcement Bypass Allows Unauthorized Removal of MFA for Other Users
Source: NVD (National Vulnerability Database)
Vulnerability Description
Mattermost versions 10.5.x <= 10.5.1, 9.11.x <= 9.11.9 fail to enforce MFA checks in PUT /api/v4/users/user-id/mfa when the requesting user differs from the target user ID, which allows users with edit_other_users permission to activate or deactivate MFA for other users, even if those users have not set up MFA.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
关键功能的认证机制缺失
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 10.5.1及之前版本和9.11.9及之前版本存在安全漏洞,该漏洞源于MFA检查不充分,可能导致未经授权的MFA操作。
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
VendorProductAffected VersionsCPESubscribe
MattermostMattermost 10.5.0 ~ 10.5.1 -
II. Public POCs for CVE-2025-27538
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III. Intelligence Information for CVE-2025-27538
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