critical9.9
CVE-2025-20051
Mattermost allows reading arbitrary files
Impact
Mattermost versions 10.4.x <= 10.4.1, 9.11.x <= 9.11.7, 10.3.x <= 10.3.2, 10.2.x <= 10.2.2 fail to properly validate input when patching and duplicating a board, which allows a user to read any arbitrary file on the system via duplicating a specially crafted block in Boards.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/mattermost/mattermost/server/v8 | < 8.0.0-20250122165010-4ed702ccff4e | 8.0.0-20250122165010-4ed702ccff4e |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mattermost | Mattermost Server | from 9.11.0 before 9.11.8 from 10.2.0 before 10.2.3 from 10.3.0 before 10.3.3 from 10.4.0 before 10.4.2 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://mattermost.com/security-updates
- https://github.com/advisories/GHSA-v469-7wp6-7cvp
- https://nvd.nist.gov/vuln/detail/CVE-2025-20051
- https://github.com/mattermost/mattermost-plugin-boards/commit/025ce8d363a054473bc002f43f602a4032d38c06
- https://github.com/mattermost/mattermost/commit/4ed702ccff4ec3c9eff832a9b6060f9f4454141d