GHSA-9hh7-6558-qfp2

Source

https://github.com/advisories/GHSA-9hh7-6558-qfp2

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/11/GHSA-9hh7-6558-qfp2/GHSA-9hh7-6558-qfp2.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-9hh7-6558-qfp2

Aliases

CVE-2025-55074

Published

2025-11-18T18:32:52Z

Modified

2025-11-20T10:42:44.917793Z

Severity

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

Summary

Mattermost allows other users to determine when users had read channels via channel member objects

Details

Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11 fail to enforce access permissions on the Agents plugin which allows other users to determine when users had read channels via channel member objects.

Database specific

{
    "github_reviewed_at": "2025-11-18T21:03:28Z",
    "github_reviewed": true,
    "cwe_ids": [
        "CWE-276"
    ],
    "nvd_published_at": "2025-11-18T16:15:44Z",
    "severity": "LOW"
}

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

10.11.0

Fixed

10.11.4

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

10.5.12

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

8.0.0-20250905150616-ba86dfc5876b6