GHSA-q453-638c-h4mr

Source

https://github.com/advisories/GHSA-q453-638c-h4mr

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/08/GHSA-q453-638c-h4mr/GHSA-q453-638c-h4mr.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-q453-638c-h4mr

Aliases

CVE-2025-49222

Published

2025-08-21T09:30:21Z

Modified

2025-08-21T16:14:43.670492Z

Severity

6.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N CVSS Calculator

Summary

Mattermost Fails to Validate Remote Cluster Upload Sessions

Details

Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.9.x <= 10.9.2, 10.10.x <= 10.10.0 fail to validate upload types in remote cluster upload sessions which allows a system admin to upload non-attachment file types via shared channels that could potentially be placed in arbitrary filesystem directories.

Database specific

{
    "github_reviewed_at": "2025-08-21T16:03:07Z",
    "severity": "MODERATE",
    "cwe_ids": [
        "CWE-434"
    ],
    "nvd_published_at": "2025-08-21T08:15:30Z",
    "github_reviewed": true
}

References

Affected packages

Go / 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

10.8.0

Fixed

10.8.4

Database specific

{
    "last_known_affected_version_range": "<= 10.8.3"
}

Go / 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

10.5.9

Database specific

{
    "last_known_affected_version_range": "<= 10.5.8"
}

Go / 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

9.11.0

Fixed

9.11.18

Database specific

{
    "last_known_affected_version_range": "<= 9.11.17"
}

Go / 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

10.9.0

Fixed

10.9.3

Database specific

{
    "last_known_affected_version_range": "<= 10.9.2"
}

Go / 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

10.10.1

Affected versions

10.*

10.10.0

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

0Unknown introduced version / All previous versions are affected

Fixed

8.0.0-20250708173752-d6b35c41f0ae5