CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NCVE-2023-1775
Medium (6.5) in mattermost mattermost server. EPSS 0.5% chance of exploitation in the next 30 days. Fixed in github.com/mattermost/mattermost-server 7.1.6, 7.7.2.
When running in a High Availability configuration, Mattermost fails to sanitize some of the user_updated and post_deleted events broadcast to all users, leading to disclosure of sensitive information to some of the users with currently connected Websocket clients.
Severity
- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 45% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-668, CWE-200
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mattermost:mattermost_server
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-8jhh-3jf2-pfwr | Go | github.com/mattermost/mattermost-server | >=3.3.0 <7.1.6 | 7.1.6 |
| GHSA-8jhh-3jf2-pfwr | Go | github.com/mattermost/mattermost-server | >=7.7.0 <7.7.2 | 7.7.2 |
| GHSA-8jhh-3jf2-pfwr | Go | github.com/mattermost/mattermost-server | >=7.1.0 <7.1.6 | 7.1.6 |
| GHSA-8jhh-3jf2-pfwr | Go | github.com/mattermost/mattermost-server/v5 | >=5.0.0 <7.1.6 | 7.1.6 |
| GHSA-8jhh-3jf2-pfwr | Go | github.com/mattermost/mattermost-server/v6 | >=6.0.0 <7.1.6 | 7.1.6 |