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CVE-2025-13352

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CVE-2025-13352

Published: Dec 17, 2025

Modified: Dec 17, 2025

PUBLISHED

CVSS v3.1

3.0

LOW

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.

VendorProductVersions

Mattermost

Mattermost

affected
10.11.0 - <= 10.11.6
unaffected
11.1.0
unaffected
10.11.7

Weaknesses (CWE)

CWE-1287

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

None

Integrity

Low

Availability

None

References

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