CVE-2025-20621

Description

Mattermost webapp crash via a crafted post in github.com/mattermost/mattermost-server

Affected packages (5)

• Go/github.com/mattermost/mattermost-server>= 9.11.0+incompatible, < 9.11.6+incompatible, >= 10.0.0+incompatible, < 10.0.4+incompatible, >= 10.1.0+incompatible, < 10.1.4+incompatible, >= 10.2.0+incompatible, < 10.2.1+incompatible
• Go/github.com/mattermost/mattermost-server/v5from 0
• Go/github.com/mattermost/mattermost-server/v6from 0
• Go/github.com/mattermost/mattermost/server/v8>= 10.2.0, < 10.2.1
• Go/github.com/mattermost/mattermost/server/v8from 0, < 8.0.0-20241127161322-25ff7a3779a5

CVSS scores

References (4)

• ADVISORYhttps://github.com/advisories/GHSA-w6xh-c82w-h997
• ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2025-20621
• PATCHhttps://github.com/mattermost/mattermost
• WEBhttps://mattermost.com/security-updates