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

6.5 CVSS

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.

Classification

CVE ID: CVE-2025-41395

CVSS Base Severity: MEDIUM

CVSS Base Score: 6.5

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

Problem Types

CWE-1287: Improper Validation of Specified Type of Input

Affected Products

Vendor: Mattermost

Product: Mattermost

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.05% (probability of being exploited)

EPSS Percentile: 15.32% (scored less or equal to compared to others)

EPSS Date: 2025-05-23 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-41395
https://mattermost.com/security-updates

Timeline