GHSA-vg67-chm7-8m3j
Mattermost allows remote actor to create/update/delete posts in arbitrary channels
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Go | github.com/mattermost/mattermost/server/v8 | >= 9.5.0, < 9.5.7 | 9.5.7 |
| Go | github.com/mattermost/mattermost/server/v8 | >= 9.7.0, < 9.7.6 | 9.7.6 |
| Go | github.com/mattermost/mattermost/server/v8 | >= 9.8.0, < 9.8.2 | 9.8.2 |
| Go | github.com/mattermost/mattermost/server/v8 | >= 9.9.0, < 9.9.1 | 9.9.1 |
| Go | github.com/mattermost/mattermost/server/v8 | < 8.0.0-20240619142046-8181a9ddffc0 | 8.0.0-20240619142046-8181a9ddffc0 |
| Go | github.com/mattermost/mattermost | < 5.3.2-0.20240619142046-8181a9ddffc0 | 5.3.2-0.20240619142046-8181a9ddffc0 |
Details
As written in the advisory (Markdown source, shown as plain text).
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5, 9.8.x <= 9.8.1 fail to properly validate synced posts, when shared channels are enabled, which allows a malicious remote to create/update/delete arbitrary posts in arbitrary channels
References
External links from the advisory. They lead to third-party sites.