| Package | Affected versions | Patched versions |
|---|---|---|
| github.com/mattermost/mattermost-server | ≥ 4.2.0-rc1, < 4.2.1≥ 4.2.0-rc1+incompatible, < 4.2.1+incompatible≥ 4.3.0-rc1, < 4.3.0≥ 4.3.0-rc1+incompatible, < 4.3.0+incompatible< 4.1.2< 4.1.2+incompatible | 4.2.14.2.1+incompatible4.3.04.3.0+incompatible4.1.24.1.2+incompatible |
| mattermost server | = 4.3.0≥ 4.2.0, < 4.2.1< 4.1.2 | 4.2.14.1.2 |
An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. An attacker could create fictive system-message posts via webhooks and slash commands, in the v3 or v4 REST API.
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