🛡️ CVE-2025-13352
🟢 CVSS 3.0 — Low ✅ No Known Exploit CWE-1287 NVD
3.0
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity LOW
CVSS Score 3.0
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:N
CWE CWE-1287
Public Exploit ✅ No
Source NVD
Published 2025-12-17
Updated 2026-06-15
Modified 2025-12-22
Fix URL N/A

Affected Packages

Software From version Fixed in
github.com/mattermost/mattermost
github.com/mattermost/mattermost-plugin-github
github.com/mattermost/mattermost-server
github.com/mattermost/mattermost-server/v5
github.com/mattermost/mattermost-server/v6
github.com/mattermost/mattermost/server/v8
mattermost-server 10.11.0 10.11.7

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