CVE-2025-41395

Webapp DoS via malicious retrospective post in Playbooks

Published Apr 24, 2025 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate the props used by the RetrospectivePost custom post type in the Playbooks plugin, which allows an attacker to create a specially crafted post with maliciously crafted props and cause a denial of service (DoS) of the web app for all users.

Remediation

Vendor Solution

Update Mattermost to versions 10.6.0, 10.4.3, 10.5.1, 9.11.11 or higher. Otherwise, update the Playbooks plugin to version 2.1.1 or higher

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-12104 Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate the props used by the RetrospectivePost custom post type in the Playbooks plugin, which allows an attacker to create a specially crafted post with maliciously crafted props and cause a denial of service (DoS) of the web app for all users.
Github GHSA Github GHSA GHSA-3g36-gf7c-75qw Mattermost Playbooks fails to properly validate the props used by the RetrospectivePost custom post type
References
History
Type Values Removed Values Added
First Time appeared Mattermost mattermost Server
CPEs cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
Vendors & Products Mattermost mattermost Server
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate the props used by the RetrospectivePost custom post type in the Playbooks plugin, which allows an attacker to create a specially crafted post with maliciously crafted props and cause a denial of service (DoS) of the web app for all users.
Title Webapp DoS via malicious retrospective post in Playbooks
Weaknesses CWE-1287
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Mattermost
Published
Updated
Apr 24, 2025, 1:58 PM
Reserved
Apr 22, 2025, 11:38 AM
Status
Analyzed
Published
Apr 24, 2025, 7:15 AM
Modified
Jun 17, 2026, 9:22 AM