Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mattermost | Mattermost | 10.5.0 – ≤ 10.5.5, 9.11.0 – ≤ 9.11.15, 10.8.0 – ≤ 10.8.0, 10.7.0 – ≤ 10.7.2, 10.6.0 – ≤ 10.6.5 | 10.9.0 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | govulncheck-vulndb | 0.0.20250730T213748-1.1 | openSUSE-SU-2025:15405-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| 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 | < 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 | — | GO-2025-3769 |
| Go | github.com/mattermost/mattermost-server/v6 | all versions | — | GO-2025-3769 |
| 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 | GHSA-qh58-9v3j-wcjc |
Advisories 1
- openSUSE-SU-2025:15405-1 govulncheck-vulndb-0.0.20250730T213748-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026