CVE-2023-2793

Stack exhaustion in PreparePostForClientWithEmbedsAndImages

Description

Mattermost fails to validate links on external websites when constructing a preview for a linked website, allowing an attacker to cause a denial-of-service by a linking to a specially crafted webpage in a message.

Remediation

Solution:

  • Update Mattermost to version  v7.8.3, v7.9.2, 7.10.1 or higher.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.23%
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-2023-2793?
CVE-2023-2793 has been scored as a medium severity vulnerability.
How to fix CVE-2023-2793?
To fix CVE-2023-2793: Update Mattermost to version  v7.8.3, v7.9.2, 7.10.1 or higher.
Is CVE-2023-2793 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-2793 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-2023-2793?
CVE-2023-2793 affects Mattermost Mattermost.
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