CVE-2025-14350
Fixed in a distro release EPSS <1%CVSS 4.3
Mattermost versions 11.1.x <= 11.1.2, 10.11.x <= 10.11.9, 11.2.x <= 11.2.1 fail to properly validate team membership when processing channel mentions which allows authenticated users to determine the existence of teams and their URL names via posting channel shortlinks and observing the channel_mentions property in the API response. Mattermost Advisory ID: MMSA-2025-00563
Products: Mattermost
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| Go | github.com/mattermost/mattermost-server | no fix |
| Go | github.com/mattermost/mattermost-server | 5.3.2-0.20251209134645-761e56bb11cc |
| Go | github.com/mattermost/mattermost-server/v5 | no fix |
| Go | github.com/mattermost/mattermost-server/v6 | no fix |
| Go | github.com/mattermost/mattermost/server/v8 | 8.0.0-20251209134645-761e56bb11cc |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| openSUSE:Leap 15.6 | govulncheck-vulndb | 0.0.20260226T182644-150000.1.149.1 |
| openSUSE:Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 |