GHSA-c4r7-j7pp-r8mp

Suggest an improvement
Source
https://github.com/advisories/GHSA-c4r7-j7pp-r8mp
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-c4r7-j7pp-r8mp/GHSA-c4r7-j7pp-r8mp.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-c4r7-j7pp-r8mp
Aliases
Published
2026-05-21T09:32:12Z
Modified
2026-06-25T19:56:31Z
Severity
  • 8.0 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H CVSS Calculator
Summary
Mattermost has a Path Traversal issue
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 check integration URL for path traversal which allows an malicious authenticated user to call an arbitrary API via system admin Mattermost auth token using via path traversal in integration action URL. Mattermost Advisory ID: MMSA-2026-00640.

Database specific 
{
    "cwe_ids":  [
        "CWE-22"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-06-23T22:02:06Z",
    "nvd_published_at":  "2026-05-21T09:16:30Z",
    "severity":  "HIGH"
}
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-c4r7-j7pp-r8mp/GHSA-c4r7-j7pp-r8mp.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-c4r7-j7pp-r8mp/GHSA-c4r7-j7pp-r8mp.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-c4r7-j7pp-r8mp/GHSA-c4r7-j7pp-r8mp.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-c4r7-j7pp-r8mp/GHSA-c4r7-j7pp-r8mp.json"