CVE-2023-3581

WebSockets accept connections from HTTPS origin

Description

Mattermost fails to properly validate the origin of a websocket connection allowing a MITM attacker on Mattermost to access the websocket APIs.

Remediation

Solution:

  • Update Mattermost Server to versions v7.8.7, v7.9.5, v7.10.3 or higher.

Category

6.2
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.13%
Vendor Advisory mattermost.com
Affected: Mattermost Mattermost
Published at:
Updated at:

References

Link Tags
https://mattermost.com/security-updates vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-3581?
CVE-2023-3581 has been scored as a medium severity vulnerability.
How to fix CVE-2023-3581?
To fix CVE-2023-3581: Update Mattermost Server to versions v7.8.7, v7.9.5, v7.10.3 or higher.
Is CVE-2023-3581 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-3581 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-3581?
CVE-2023-3581 affects Mattermost Mattermost.
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