CVE-2023-1775

Unsanitized events sent over Websocket to regular users in a High Availability environment

CVSS 4.3 MEDIUMEPSS 0.5%CWE-200

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 4.3EPSS 0.5%KEV nãoPoC —Patch —

Lifecycle

31 Mar 2023Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected products

Mattermost · Mattermost

Want to know if your infrastructure is exposed to this?

Talk to TrueHacking →

References

https://mattermost.com/security-updates/