GHSA-jqgv-39mg-7c2r
Suggest an improvement- Source
- https://github.com/advisories/GHSA-jqgv-39mg-7c2r
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-jqgv-39mg-7c2r/GHSA-jqgv-39mg-7c2r.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-jqgv-39mg-7c2r
- Aliases
- Published
- 2026-06-22T15:30:45Z
- Modified
- 2026-09-15T20:00:39Z
- Severity
-
- 6.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:H CVSS Calculator
- Summary
- Mattermost doesn't authenticate Atlassian Connect installed callbacks, allowing a remote unauthenticated attacker to inject a rogue sharedSecret
- Details
-
Mattermost versions 11.7.x <= 11.7.0, 11.6.x <= 11.6.2, 11.5.x <= 11.5.5, 10.11.x <= 10.11.17 fail to authenticate Atlassian Connect installed callbacks, allowing a remote unauthenticated attacker to inject a rogue sharedSecret and disrupt the Jira integration via POST to /ac/installed during the pending-install window.. Mattermost Advisory ID: MMSA-2026-00654
- Database specific
{ "cwe_ids": [ "CWE-306" ], "github_reviewed": true, "github_reviewed_at": "2026-09-15T19:50:55Z", "nvd_published_at": "2026-06-22T14:17:51Z", "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
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
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
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