CVE-2025-20086
Mattermost fails to properly validate post props in github.com/mattermost/mattermost-server
6.5
MEDIUM
CVSS 3.1
EPSS 0.45%
Description
Mattermost fails to properly validate post props in github.com/mattermost/mattermost-server
How to fix CVE-2025-20086
To remediate CVE-2025-20086, upgrade the affected package to a fixed version below.
- Go/github.com/mattermost/mattermost-server—upgrade to 9.11.6+incompatible or later
- —no fix listed
- —no fix listed
- —upgrade to 10.2.1 or later
- —upgrade to 8.0.0-20241127161322-25ff7a3779a5 or later
Is CVE-2025-20086 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (5)
- >= 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
- from 0
- from 0
- >= 10.2.0, < 10.2.1
- from 0, < 8.0.0-20241127161322-25ff7a3779a5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |