GitHub Advisoryadvisory · Go

GHSA-w6xh-c82w-h997 Mattermost webapp crash via a crafted post

MEDIUM Published 2025-01-16 Modified 2025-01-16 Official page ↗
Aliases
CVE-2025-20621
Ecosystem
Go
Packages
github.com/mattermost/mattermost/server/v8
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-1287
Reviewed
2025-01-16

Affected packages

• Go github.com/mattermost/mattermost/server/v8: >= 10.2.0, < 10.2.1 → fixed in 10.2.1 • Go github.com/mattermost/mattermost/server/v8: >= 10.1.0, < 10.1.4 → fixed in 10.1.4 • Go github.com/mattermost/mattermost/server/v8: >= 10.0.0, < 10.0.4 → fixed in 10.0.4 • Go github.com/mattermost/mattermost/server/v8: >= 9.11.0, < 9.11.6 → fixed in 9.11.6 • Go github.com/mattermost/mattermost/server/v8: < 8.0.0-20241127161322-25ff7a3779a5 → fixed in 8.0.0-20241127161322-25ff7a3779a5

Description

Mattermost versions 10.2.x <= 10.2.0, 9.11.x <= 9.11.5, 10.0.x <= 10.0.3, 10.1.x <= 10.1.3 fail to properly handle posts with attachments containing fields that cannot be cast to a String, which allows an attacker to cause the webapp to crash via creating and sending such a post to a channel.

Related

Alias · CVE (1)

  • CVE-2025-20621 Mattermost versions 10.2.x <= 10.2.0, 9.11.x <= 9.11.5, 10.0.x <= 10.0.3, 10.1.x <= 10.1.3 fail to properly handle posts with attachments… vulnerability

Weakness · CWE (1)

  • CWE-1287 Improper Validation of Specified Type of Input weakness

References