GHSA-9pj7-jh2r-87g8
Mattermost doesn't validate user permissions when creating Jira issues from Mattermost posts
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Go | github.com/mattermost/mattermost-server | >= 11.2.0, < 11.2.2 | 11.2.2 |
| Go | github.com/mattermost/mattermost-server | >= 11.1.0, < 11.1.3 | 11.1.3 |
| Go | github.com/mattermost/mattermost-server | >= 10.11.0, < 10.11.10 | 10.11.10 |
Details
As written in the advisory (Markdown source, shown as plain text).
Mattermost versions 11.1.x <= 11.1.2, 10.11.x <= 10.11.9, 11.2.x <= 11.2.1 fail to validate user permissions when creating Jira issues from Mattermost posts, which allows an authenticated attacker with access to the Jira plugin to read post content and attachments from channels they do not have access to via the /create-issue API endpoint by providing the post ID of an inaccessible post.. Mattermost Advisory ID: MMSA-2025-00550
References
External links from the advisory. They lead to third-party sites.