CVE-2025-55073
published 2025-11-14CVE-2025-55073: Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11, 10.12.x <= 10.12.0 fail to validate the relationship between the post being updated and the MSTeams…
medium5.3CVSS 3.1
AVNACLPRNUINSUCNILAN
Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11, 10.12.x <= 10.12.0 fail to validate the relationship between the post being updated and the MSTeams plugin OAuth flow which allows an attacker to edit arbitrary posts via a crafted MSTeams plugin OAuth redirect URL.
Affected
13 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| github.com | mattermost_mattermost-server | >= 10.11.0 < 10.11.4 | 10.11.4 |
| github.com | mattermost_mattermost-server | >= 10.11.0+incompatible < 10.11.4+incompatible | 10.11.4+incompatible |
| github.com | mattermost_mattermost-server | >= 10.12.0 < 10.12.1 | 10.12.1 |
| github.com | mattermost_mattermost-server | >= 10.12.0+incompatible < 10.12.1+incompatible | 10.12.1+incompatible |
| github.com | mattermost_mattermost-server | >= 10.5.0 < 10.5.12 | 10.5.12 |
| github.com | mattermost_mattermost-server | >= 10.5.0+incompatible < 10.5.12+incompatible | 10.5.12+incompatible |
| github.com | mattermost_mattermost_server_v8 | >= 0 < 8.0.0-20250929212932-a41db04d2746 | 8.0.0-20250929212932-a41db04d2746 |
| mattermost | mattermost | 10.11.0 – 10.11.3 | — |
| mattermost | mattermost | 10.12.0 – 10.12.0 | — |
| mattermost | mattermost | 10.5.0 – 10.5.11 | — |
| mattermost | mattermost_server | >= 10.11.0 < 10.11.4 | 10.11.4 |
| mattermost | mattermost_server | >= 10.12.0 < 10.12.1 | 10.12.1 |
| mattermost | mattermost_server | >= 10.5.0 < 10.5.12 | 10.5.12 |