GHSA-r6qj-894f-5hr2

Suggest an improvement
Source
https://github.com/advisories/GHSA-r6qj-894f-5hr2
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/10/GHSA-r6qj-894f-5hr2/GHSA-r6qj-894f-5hr2.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-r6qj-894f-5hr2
Aliases
Published
2025-10-16T09:30:24Z
Modified
2025-11-05T19:57:38Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
Mattermost has a Missing Authorization vulnerability
Details

Mattermost versions 10.11.x <= 10.11.1, 10.10.x <= 10.10.2, 10.5.x <= 10.5.10 fail to verify a user has permission to join a Mattermost team using the original invite token which allows any attacked to join any team on a Mattermost server regardless of restrictions via manipulating the RelayState.

Database specific 
{
    "cwe_ids":  [
        "CWE-862"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2025-10-16T21:10:44Z",
    "nvd_published_at":  "2025-10-16T09:15:35Z",
    "severity":  "HIGH"
}
References

Affected packages

Go
github.com/mattermost/mattermost/server/v8

Package

Name
github.com/mattermost/mattermost/server/v8
View open source insights on deps.dev
Purl
pkg:golang/github.com/mattermost/mattermost/server/v8

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
8.0.0-20250815100400-2d5cdc6e217e

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/10/GHSA-r6qj-894f-5hr2/GHSA-r6qj-894f-5hr2.json"
github.com/mattermost/mattermost-server

Package

Name
github.com/mattermost/mattermost-server
View open source insights on deps.dev
Purl
pkg:golang/github.com/mattermost/mattermost-server

Affected ranges

Type
SEMVER
Events
Introduced
10.11.0
Fixed
10.11.2

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/10/GHSA-r6qj-894f-5hr2/GHSA-r6qj-894f-5hr2.json"
github.com/mattermost/mattermost-server

Package

Name
github.com/mattermost/mattermost-server
View open source insights on deps.dev
Purl
pkg:golang/github.com/mattermost/mattermost-server

Affected ranges

Type
SEMVER
Events
Introduced
10.10.0
Fixed
10.10.3

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/10/GHSA-r6qj-894f-5hr2/GHSA-r6qj-894f-5hr2.json"
github.com/mattermost/mattermost-server

Package

Name
github.com/mattermost/mattermost-server
View open source insights on deps.dev
Purl
pkg:golang/github.com/mattermost/mattermost-server

Affected ranges

Type
SEMVER
Events
Introduced
10.5.0
Fixed
10.5.11

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/10/GHSA-r6qj-894f-5hr2/GHSA-r6qj-894f-5hr2.json"