---
id: CVE-2025-41395
aliases:
  - GHSA-3g36-gf7c-75qw
  - GO-2025-3642
title: >-
  Mattermost Playbooks fails to properly validate the props used by the
  RetrospectivePost custom post type
summary: >-
  Mattermost Playbooks fails to properly validate the props used by the
  RetrospectivePost custom post type
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
vendor: mattermost
product: github.com/mattermost/mattermost-plugin-playbooks
ecosystem: go
affected:
  - github.com/mattermost/mattermost-plugin-playbooks >= 2.0.0
  - >-
    github.com/mattermost/mattermost/server/v8 <
    8.0.0-20250218121836-2b5275d87136
  - github.com/mattermost/mattermost/server/v8 >= 10.4.0
  - github.com/mattermost/mattermost/server/v8 >= 10.5.0
  - github.com/mattermost/mattermost/server/v8 >= 9.11.0
  - github.com/mattermost/mattermost-plugin-playbooks < 1.41.0
patched:
  - github.com/mattermost/mattermost/server/v8 8.0.0-20250218121836-2b5275d87136
  - github.com/mattermost/mattermost-plugin-playbooks 1.41.0
published: '2025-04-24'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T03:50:57.095115158Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-3g36-gf7c-75qw'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2025-41395'
  - url: >-
      https://github.com/mattermost/mattermost-plugin-playbooks/commit/4c823090e281cb9c0d5c17ee2e5db275117540d1
  - url: >-
      https://github.com/mattermost/mattermost/commit/2b5275d87136f07e016c8eca09a2f004b31afc8a
  - url: 'https://github.com/mattermost/mattermost-plugin-playbooks'
  - url: 'https://mattermost.com/security-updates'
tags:
  - osv
  - go
epss: 0.00492
epssPercentile: 0.4135
ingestedAt: '2026-09-12T03:13:01.749Z'
---

## Overview

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 packages

- `github.com/mattermost/mattermost-plugin-playbooks >= 2.0.0`
- `github.com/mattermost/mattermost/server/v8 < 8.0.0-20250218121836-2b5275d87136`
- `github.com/mattermost/mattermost/server/v8 >= 10.4.0`
- `github.com/mattermost/mattermost/server/v8 >= 10.5.0`
- `github.com/mattermost/mattermost/server/v8 >= 9.11.0`
- `github.com/mattermost/mattermost-plugin-playbooks < 1.41.0`

## Remediation

Upgrade to a patched release:

- `github.com/mattermost/mattermost/server/v8 8.0.0-20250218121836-2b5275d87136`
- `github.com/mattermost/mattermost-plugin-playbooks 1.41.0`