CVE-2026-4055
5 advisories.
Go/github.com/mattermost/mattermost/server/v8 CVE-2026-4055: medium 4.3
Mattermost has an Incorrect Authorization issue
Action: Upgrade github.com/mattermost/mattermost/server/v8 to 8.0.0-20260320113102-f2b3d1c6a945 or later.
go get github.com/mattermost/mattermost/server/v8@v8.0.0-20260320113102-f2b3d1c6a945Affected
| introduced | fixed | last affected |
|---|---|---|
| 8.0.0-20260304132957-9f2616376582 | 8.0.0-20260320113102-f2b3d1c6a945 | - |
Fixed versions
| 8.0.0-20260320113102-f2b3d1c6a945 |
Sources
- osv: GHSA-6cfr-wp44-6qmv
- https://nvd.nist.gov/vuln/detail/CVE-2026-4055
- https://github.com/mattermost/mattermost
- https://mattermost.com/security-updates
CVE-2026-4055 · published · modified · JSON
Go/github.com/mattermost/mattermost-server CVE-2026-4055: unknown
Mattermost has an Incorrect Authorization issue in github.com/mattermost/mattermost-server
Action: No fix published. Pin and monitor.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | - | - |
Fixed versions
No fixed version in the source.
Sources
- osv: GO-2026-5173
- https://github.com/advisories/GHSA-6cfr-wp44-6qmv
- https://nvd.nist.gov/vuln/detail/CVE-2026-4055
- https://mattermost.com/security-updates
CVE-2026-4055 · published · modified · JSON
Go/github.com/mattermost/mattermost-server/v5 CVE-2026-4055: unknown
Mattermost has an Incorrect Authorization issue in github.com/mattermost/mattermost-server
Action: No fix published. Pin and monitor.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | - | - |
Fixed versions
No fixed version in the source.
Sources
- osv: GO-2026-5173#Go/github.com/mattermost/mattermost-server/v5
- https://github.com/advisories/GHSA-6cfr-wp44-6qmv
- https://nvd.nist.gov/vuln/detail/CVE-2026-4055
- https://mattermost.com/security-updates
CVE-2026-4055 · published · modified · JSON
Go/github.com/mattermost/mattermost-server/v6 CVE-2026-4055: unknown
Mattermost has an Incorrect Authorization issue in github.com/mattermost/mattermost-server
Action: No fix published. Pin and monitor.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | - | - |
Fixed versions
No fixed version in the source.
Sources
- osv: GO-2026-5173#Go/github.com/mattermost/mattermost-server/v6
- https://github.com/advisories/GHSA-6cfr-wp44-6qmv
- https://nvd.nist.gov/vuln/detail/CVE-2026-4055
- https://mattermost.com/security-updates
CVE-2026-4055 · published · modified · JSON
Go/github.com/mattermost/mattermost/server/v8 CVE-2026-4055: unknown
Mattermost has an Incorrect Authorization issue in github.com/mattermost/mattermost-server
Action: Upgrade github.com/mattermost/mattermost/server/v8 to 8.0.0-20260320113102-f2b3d1c6a945 or later.
go get github.com/mattermost/mattermost/server/v8@v8.0.0-20260320113102-f2b3d1c6a945Affected
| introduced | fixed | last affected |
|---|---|---|
| 8.0.0-20260304132957-9f2616376582 | 8.0.0-20260320113102-f2b3d1c6a945 | - |
Fixed versions
| 8.0.0-20260320113102-f2b3d1c6a945 |
Sources
- osv: GO-2026-5173#Go/github.com/mattermost/mattermost/server/v8
- https://github.com/advisories/GHSA-6cfr-wp44-6qmv
- https://nvd.nist.gov/vuln/detail/CVE-2026-4055
- https://mattermost.com/security-updates
CVE-2026-4055 · published · modified · JSON