CVE-2025-53857— Lack of Authorization on Get Channel Subscriptions for Autocomplete in Mattermost Confluence Plugin
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I. Basic Information for CVE-2025-53857
Vulnerability Information
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Vulnerability Title
Lack of Authorization on Get Channel Subscriptions for Autocomplete in Mattermost Confluence Plugin
Source: NVD (National Vulnerability Database)
Vulnerability Description
Mattermost Confluence Plugin version <1.5.0 fails to check the access of the user to the channel which allows attackers to get channel subscription details without proper access to the channel via API call to the GET autocomplete/GetChannelSubscriptions endpoint.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制缺失
Source: NVD (National Vulnerability Database)
Vulnerability Title
Mattermost Confluence Plugin 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mattermost Confluence Plugin是美国Mattermost公司的一个插件。 Mattermost Confluence Plugin 1.5.0之前版本存在安全漏洞，该漏洞源于未检查用户对通道的访问权限，可能导致获取订阅详情。
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 Confluence Plugin | 0 ~ 1.5.0 | - |
II. Public POCs for CVE-2025-53857
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|---|
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Same Patch Batch · Mattermost · 2025-08-11 · 13 CVEs total
| CVE-2025-52931 | 7.5 HIGH | Unexpected input to Update Channel Subscription endpoint causes DoS in Mattermost Confluen |
| CVE-2025-54525 | 7.5 HIGH | Unexpected input to Create Channel Subscription endpoint causes DoS in Mattermost Confluen |
| CVE-2025-44004 | 7.2 HIGH | Unauthenticated Channel Subscription Creation in Mattermost Confluence Plugin |
| CVE-2025-54478 | 7.2 HIGH | Unauthenticated Channel Subscription Edit in Mattermost Confluence Plugin |
| CVE-2025-48731 | 6.4 MEDIUM | Unauthorized Subscription Edit to Confluence Space in Mattermost Confluence Plugin |
| CVE-2025-53514 | 5.9 MEDIUM | Unexpected Input to Server Webhook endpoint Causes DoS in Mattermost Confluence Plugin |
| CVE-2025-54463 | 5.9 MEDIUM | Unexpected Input to Cloud Webhook endpoint Causes DoS in Mattermost Confluence Plugin |
| CVE-2025-54458 | 5.0 MEDIUM | Unauthorized Subscription Creation to Confluence Space in Mattermost Confluence Plugin |
| CVE-2025-44001 | 4.0 MEDIUM | Unauthorized Channel Subscription Read in Mattermost Confluence Plugin |
| CVE-2025-53910 | 4.0 MEDIUM | Unauthorized Channel Subscription Edit in Mattermost Confluence Plugin |
| CVE-2025-8285 | 4.0 MEDIUM | Unauthorized Channel Subscription Creation in Mattermost Confluence Plugin |
| CVE-2025-49221 | 3.7 LOW | Unauthenticated Access to Channel Subscription in Mattermost Confluence Plugin |
IV. Related Vulnerabilities
Same product: Mattermost Confluence Plugin
- CVE-2025-13523
Cross-Site Scripting (XSS) via Unescaped Display Names in Ma - CVE-2025-8285
Unauthorized Channel Subscription Creation in Mattermost Con - CVE-2025-54525
Unexpected input to Create Channel Subscription endpoint cau - CVE-2025-54478
Unauthenticated Channel Subscription Edit in Mattermost Conf - CVE-2025-54458
Unauthorized Subscription Creation to Confluence Space in Ma
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Same weakness: CWE-862
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