CVE-2023-1777
MEDIUM5.3EPSS 0.31%Mattermost vulnerable to information disclosure
Published: 3/31/2023Modified: 7/25/2025
Description
Mattermost allows an attacker to request a preview of an existing message when creating a new message via the createPost API call, disclosing the contents of the linked message.
Affected packages (3)
- Bitnami/mattermostfrom 0, < 7.1.6 | >= 7.7.1, <= 7.7.1, >= 7.8.0, <= 7.8.0
- Go/github.com/mattermost/mattermost-server>= 7.8.0, < 7.8.1
- Go/github.com/mattermost/mattermost-server/v6>= 6.3.0, < 7.1.6
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |