GHSA-ff85-qw3h-g9vp

Suggest an improvement
Source
https://github.com/advisories/GHSA-ff85-qw3h-g9vp
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/11/GHSA-ff85-qw3h-g9vp/GHSA-ff85-qw3h-g9vp.json
JSON Data
https://api.test.osv.dev/v1/vulns/GHSA-ff85-qw3h-g9vp
Aliases
Published
2025-11-14T09:30:27Z
Modified
2025-11-18T16:12:39.884943Z
Severity
  • 5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L CVSS Calculator
Summary
Mattermost allows an attacker to edit arbitrary posts via a crafted MSTeams plugin OAuth redirect URL
Details

Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11, 10.12.x <= 10.12.0 fail to validate the relationship between the post being updated and the MSTeams plugin OAuth flow which allows an attacker to edit arbitrary posts via a crafted MSTeams plugin OAuth redirect URL.

Database specific 
{
    "cwe_ids": [
        "CWE-306"
    ],
    "nvd_published_at": "2025-11-14T08:15:45Z",
    "github_reviewed_at": "2025-11-17T17:58:31Z",
    "github_reviewed": true,
    "severity": "MODERATE"
}
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

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/11/GHSA-ff85-qw3h-g9vp/GHSA-ff85-qw3h-g9vp.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
10.5.12

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/11/GHSA-ff85-qw3h-g9vp/GHSA-ff85-qw3h-g9vp.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
10.12.0
Fixed
10.12.1

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/11/GHSA-ff85-qw3h-g9vp/GHSA-ff85-qw3h-g9vp.json"
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
8.0.0-20250929212932-a41db04d2746

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/11/GHSA-ff85-qw3h-g9vp/GHSA-ff85-qw3h-g9vp.json"