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Mattermost Improper Validation of Specified Type of Input vulnerability

Moderate severity GitHub Reviewed Published Jan 9, 2025 to the GitHub Advisory Database • Updated Jan 9, 2025

Package

gomod github.com/mattermost/mattermost/server/v8 (Go)

Affected versions

>= 9.11.0, < 9.11.16
>= 10.0.0, < 10.0.4
>= 10.1.0, < 10.1.4
= 10.2.0
< 8.0.0-20250102081831-64c566a8280b

Patched versions

9.11.16
10.0.4
10.1.4
10.2.1
8.0.0-20250102081831-64c566a8280b

Description

Mattermost versions 10.2.0, 9.11.x <= 9.11.5, 10.0.x <= 10.0.3, 10.1.x <= 10.1.3 fail to properly validate post types, which allows attackers to deny service to users with the sysconsole_read_plugins permission via creating a post with the custom_pl_notification type and specific props.

References

Published by the National Vulnerability Database Jan 9, 2025
Published to the GitHub Advisory Database Jan 9, 2025
Reviewed Jan 9, 2025
Last updated Jan 9, 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
Low

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:L

Weaknesses

CVE ID

CVE-2025-20033

GHSA ID

GHSA-2549-xh72-qrpm

Source code

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