CVE-2025-41395: Webapp DoS via malicious retrospective post in Playbooks

Published Apr 24, 2025
·
Updated

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.

Affected Software

10 affected componentsFixes available
Mattermost Mattermost<=10.4.2, <=10.5.0, <=9.11.10
go/github.com/mattermost/mattermost-plugin-playbooks<1.41.0
1.41.0
go/github.com/mattermost/mattermost/server/v8>=9.11.0<9.11.11
go/github.com/mattermost/mattermost/server/v8>=10.5.0<10.5.1
go/github.com/mattermost/mattermost/server/v8>=10.4.0<10.4.3
go/github.com/mattermost/mattermost/server/v8<8.0.0-20250218121836-2b5275d87136
8.0.0-20250218121836-2b5275d87136
go/github.com/mattermost/mattermost-plugin-playbooks>=2.0.0<2.1.1
Mattermost Mattermost Server>=9.11.0<9.11.11
Mattermost Mattermost Server>=10.4.0<10.4.3
Mattermost Mattermost Server>=10.5.0<10.5.1

Remediation

Information

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

Event History

Apr 24, 2025
CVE Published
via MITRE·06:48 AM
Data Sourced
via MITRE·06:48 AM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·07:15 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·07:15 AM
Affected Software
Advisory Published
via GitHub·09:30 AM
Jul 14, 57721
Event
via NVD·06:38 PM
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Frequently Asked Questions

1

What is the severity of CVE-2025-41395?

CVE-2025-41395 has been classified as a high severity vulnerability due to its potential to allow attackers to exploit improperly validated props in the Mattermost Playbooks plugin.

2

How do I fix CVE-2025-41395?

To fix CVE-2025-41395, upgrade your Mattermost instance to versions 10.4.3, 10.5.1, or 9.11.11 or later.

3

Which versions are affected by CVE-2025-41395?

CVE-2025-41395 affects Mattermost versions 10.4.x up to and including 10.4.2, 10.5.x up to and including 10.5.0, and 9.11.x up to and including 9.11.10.

4

What type of attacks can be performed using CVE-2025-41395?

An attacker can exploit CVE-2025-41395 by creating specially crafted posts that can execute malicious actions within the Mattermost environment.

5

Is there a workaround for CVE-2025-41395?

No official workaround has been provided for CVE-2025-41395; users are advised to upgrade to fixed versions to mitigate risk.

Company

Resources

Contact

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