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Mattermost Playbooks fails to properly validate the props used by the RetrospectivePost custom post type

Moderate severity GitHub Reviewed Published Apr 24, 2025 to the GitHub Advisory Database • Updated Apr 24, 2025

Package

gomod github.com/mattermost/mattermost-plugin-playbooks (Go)

Affected versions

>= 2.0.0, < 2.1.1
< 1.41.0

Patched versions

1.41.0
gomod github.com/mattermost/mattermost/server/v8 (Go)
< 8.0.0-20250218121836-2b5275d87136
>= 10.4.0, < 10.4.3
>= 10.5.0, < 10.5.1
>= 9.11.0, < 9.11.11
8.0.0-20250218121836-2b5275d87136

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.

References

Published by the National Vulnerability Database Apr 24, 2025
Published to the GitHub Advisory Database Apr 24, 2025
Reviewed Apr 24, 2025
Last updated Apr 24, 2025

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS score

Weaknesses

CVE ID

CVE-2025-41395

GHSA ID

GHSA-3g36-gf7c-75qw

Source code

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