CVSS 3.1
9.9 criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HCVE-2025-4981
Critical (9.9) in mattermost mattermost server. EPSS 1.0% chance of exploitation in the next 30 days. Fixed in github.com/mattermost/mattermost-server 0.0.0-20250519205859-65aec10162f6, 10.5.6+incompatible, 10.6.6+incompatible.
Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to sanitize filenames in the archive extractor which allows authenticated users to write files to arbitrary locations on the filesystem via uploading archives with path traversal sequences in filenames, potentially leading to remote code execution. The vulnerability impacts instances where file uploads and document search by content is enabled (FileSettings.EnableFileAttachments = true and FileSettings.ExtractContent = true). These configuration settings are enabled by default.
Severity
- EPSS
- 1.0% chance of exploitation in the next 30 days; higher than 63% of CVEs (scores of 2026-10-31)
- CWE
- CWE-427
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mattermost:mattermost_server
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-qh58-9v3j-wcjc | Go | github.com/mattermost/mattermost-server | <0.0.0-20250519205859-65aec10162f6 | 0.0.0-20250519205859-65aec10162f6 |
| GHSA-qh58-9v3j-wcjc | Go | github.com/mattermost/mattermost/server/v8 | <8.0.0-20250519205859-65aec10162f6 | 8.0.0-20250519205859-65aec10162f6 |
| GHSA-qh58-9v3j-wcjc | Go | github.com/mattermost/mattermost/server/v8 | >=10.5.0 <10.5.6 | 10.5.6 |
| GHSA-qh58-9v3j-wcjc | Go | github.com/mattermost/mattermost/server/v8 | >=9.11.0 <9.11.16 | 9.11.16 |
| GHSA-qh58-9v3j-wcjc | Go | github.com/mattermost/mattermost/server/v8 | >=10.8.0 <10.8.1 | 10.8.1 |
| GHSA-qh58-9v3j-wcjc | Go | github.com/mattermost/mattermost/server/v8 | >=10.7.0 <10.7.3 | 10.7.3 |
| GHSA-qh58-9v3j-wcjc | Go | github.com/mattermost/mattermost/server/v8 | >=10.6.0 <10.6.6 | 10.6.6 |
| GO-2025-3769 | Go | github.com/mattermost/mattermost-server | <0.0.0-20250519205859-65aec10162f6 >=9.11.0+incompatible <9.11.16+incompatible >=10.5.0+incompatible <10.5.6+incompatible >=10.6.0+incompatible <10.6.6+incompatible >=10.7.0+incompatible <10.7.3+incompatible >=10.8.0+incompatible <10.8.1+incompatible | 0.0.0-20250519205859-65aec10162f6, 9.11.16+incompatible, 10.5.6+incompatible, 10.6.6+incompatible, 10.7.3+incompatible, 10.8.1+incompatible |
| GO-2025-3769 | Go | github.com/mattermost/mattermost-server/v5 | all versions | no fix published |
| GO-2025-3769 | Go | github.com/mattermost/mattermost-server/v6 | all versions | no fix published |
| GO-2025-3769 | Go | github.com/mattermost/mattermost/server/v8 | <8.0.0-20250519205859-65aec10162f6 | 8.0.0-20250519205859-65aec10162f6 |