CVE-2025-54525— Unexpected input to Create Channel Subscription endpoint causes DoS in Mattermost Confluence Plugin
Quick assessment
Affected
Mattermost Mattermost Confluence Plugin
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 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，该漏洞源于未处理意外请求体，可能导致插件崩溃。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-54525
Vulnerability Information
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Vulnerability Title
Unexpected input to Create Channel Subscription endpoint causes DoS in Mattermost Confluence Plugin
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost Confluence Plugin version <1.5.0 fails to handle unexpected request body which allows attackers to crash the plugin via constant hit to create channel subscription endpoint with an invalid request body.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1287
Source: CVE Program / CVE List V5
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，该漏洞源于未处理意外请求体，可能导致插件崩溃。
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-2025-54525
| # | POC Description | Source Link | Shenlong Link |
|---|
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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-2025-44004 | 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 |
| CVE-2025-53857 | 3.7 LOW | Lack of Authorization on Get Channel Subscriptions for Autocomplete in Mattermost Confluen |
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V. Comments for CVE-2025-54525
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