GHSA-679f-wmrg-qf57

Suggest an improvement
Source
https://github.com/advisories/GHSA-679f-wmrg-qf57
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-679f-wmrg-qf57/GHSA-679f-wmrg-qf57.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-679f-wmrg-qf57
Aliases
Published
2026-03-16T15:30:43Z
Modified
2026-03-23T18:56:02.455815Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
Mattermost allows a removed team member to enumerate all public channels within a private team
Details

Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to properly validate team membership when searching channels which allows a removed team member to enumerate all public channels within a private team via the channel search API endpoint. Mattermost Advisory ID: MMSA-2025-00568

Database specific 
{
    "cwe_ids": [
        "CWE-862"
    ],
    "github_reviewed_at": "2026-03-17T20:01:40Z",
    "nvd_published_at": "2026-03-16T14:19:29Z",
    "severity": "MODERATE",
    "github_reviewed": true
}
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
0Unknown introduced version / All previous versions are affected
Fixed
8.0.0-20260113182106-a18b80ba4c32

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-679f-wmrg-qf57/GHSA-679f-wmrg-qf57.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
0Unknown introduced version / All previous versions are affected
Fixed
5.3.2-0.20260113182106-a18b80ba4c32

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-679f-wmrg-qf57/GHSA-679f-wmrg-qf57.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-rc1
Fixed
10.11.11

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-679f-wmrg-qf57/GHSA-679f-wmrg-qf57.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
11.2.0-rc1
Fixed
11.2.3

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-679f-wmrg-qf57/GHSA-679f-wmrg-qf57.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
11.3.0-rc1
Fixed
11.3.1

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-679f-wmrg-qf57/GHSA-679f-wmrg-qf57.json"