CVE-2025-13352— Mattermost GitHub Plugin allows unauthorized GitHub reactions via reaction forwarding hijacking
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I. Basic Information for CVE-2025-13352
Vulnerability Information
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Vulnerability Title
Mattermost GitHub Plugin allows unauthorized GitHub reactions via reaction forwarding hijacking
Source: NVD (National Vulnerability Database)
Vulnerability Description
Mattermost versions 10.11.x <= 10.11.6 and Mattermost GitHub plugin versions <=2.4.0 fail to validate plugin bot identity in reaction forwarding which allows attackers to hijack the GitHub reaction feature to make users add reactions to arbitrary GitHub objects via crafted notification posts.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-1287
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存在安全漏洞，该漏洞源于在反应转发中未验证插件机器人身份，可能导致通过特制通知帖子劫持GitHub反应功能。
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 | 10.11.0 ~ 10.11.6 | - |
II. Public POCs for CVE-2025-13352
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Mattermost · 2025-12-17 · 7 CVEs total
| CVE-2025-12689 | 6.5 MEDIUM | DoS in Calls plugin via malformed UTF-8 in WebSocket request |
| CVE-2025-62190 | 4.3 MEDIUM | CSRF Allows Call Initiation and Message Delivery |
| CVE-2025-13326 | 3.9 LOW | Mattermost Desktop App fails to enable Hardened Runtime when packaged for Mac App Store |
| CVE-2025-13324 | 3.7 LOW | Lack of Invalidation of Legacy Remote Cluster Invite Tokens After Confirmation |
| CVE-2025-13321 | 3.3 LOW | Mattermost Desktop App logging sensitive information and fails to clear data on server del |
| CVE-2025-62690 | 3.1 LOW | Open redirect in error page when link opened in new tab |
IV. Related Vulnerabilities
Same product: 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 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-1287
- CVE-2026-33806
fastify vulnerable to Body Schema Validation Bypass via Lead - CVE-2019-25596
SpotAuditor 5.2.6 Name Field Denial of Service - CVE-2026-2092
Keycloak-services: keycloak: unauthorized access via imprope - CVE-2026-2454
DoS in Calls plugin via malformed msgpack in websocket reque - CVE-2026-25783
Denial of service via malformed User-Agent header in getBrow
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