| Package | Affected versions | Patched versions |
|---|---|---|
| github.com/mattermost/mattermost | < 5.3.2-0.20240619142046-8181a9ddffc0 | 5.3.2-0.20240619142046-8181a9ddffc0 |
| github.com/mattermost/mattermost-server | ≥ 9.5.0+incompatible, < 9.5.7+incompatible≥ 9.7.0+incompatible, < 9.7.6+incompatible≥ 9.8.0+incompatible, < 9.8.2+incompatible≥ 9.9.0+incompatible, < 9.9.1+incompatible | 9.5.7+incompatible9.7.6+incompatible9.8.2+incompatible9.9.1+incompatible |
| github.com/mattermost/mattermost-server/v5 | all versions | |
| github.com/mattermost/mattermost-server/v6 | all versions | |
| github.com/mattermost/mattermost/server/v8 | ≥ 9.5.0, < 9.5.7≥ 9.7.0, < 9.7.6≥ 9.8.0, < 9.8.2≥ 9.9.0, < 9.9.1< 8.0.0-20240619142046-8181a9ddffc0all versions | 9.5.79.7.69.8.29.9.18.0.0-20240619142046-8181a9ddffc0 |
| mattermost server | = 9.9.0≥ 9.5.0, < 9.5.7≥ 9.7.0, < 9.7.6≥ 9.8.0, < 9.8.2 | 9.5.79.7.69.8.2 |
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
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