GHSA-rmvv-8v8w-rf7x

Suggest an improvement
Source
https://github.com/advisories/GHSA-rmvv-8v8w-rf7x
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-rmvv-8v8w-rf7x/GHSA-rmvv-8v8w-rf7x.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-rmvv-8v8w-rf7x
Aliases
Published
2026-05-26T13:30:15Z
Modified
2026-07-07T16:11:11Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Summary
Mattermost doesn't validate user-supplied input in API request handlers
Details

Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to validate user-supplied input in API request handlers which allows an authenticated attacker to crash the plugin process via a crafted HTTP request to the PR details endpoint. Mattermost Advisory ID: MMSA-2026-00638

Database specific 
{
    "cwe_ids": [
        "CWE-1287"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-29T19:21:37Z",
    "nvd_published_at": "2026-05-22T11:16:22Z",
    "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
11.6.0
Fixed
11.6.1

Affected versions

11.*
11.6.0

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-rmvv-8v8w-rf7x/GHSA-rmvv-8v8w-rf7x.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
11.5.0
Fixed
11.5.4

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-rmvv-8v8w-rf7x/GHSA-rmvv-8v8w-rf7x.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
11.4.0
Fixed
11.4.5

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-rmvv-8v8w-rf7x/GHSA-rmvv-8v8w-rf7x.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
10.11.15

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-rmvv-8v8w-rf7x/GHSA-rmvv-8v8w-rf7x.json"
github.com/mattermost/mattermost-plugin-github

Package

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

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.0.1-0.20260330164815-c2840e980b3c

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-rmvv-8v8w-rf7x/GHSA-rmvv-8v8w-rf7x.json"