CVE-2023-1421

Reflected XSS in OAuth flow completion endpoints

Description

A reflected cross-site scripting vulnerability in the OAuth flow completion endpoints in Mattermost allows an attacker to send AJAX requests on behalf of the victim via sharing a crafted link with a malicious state parameter.

Remediation

Solution:

  • Update Mattermost to version v7.7 or higher.

Category

3.5
CVSS
Severity: Low
CVSS 3.1 •
EPSS 0.74% Top 30%
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-2023-1421?
CVE-2023-1421 has been scored as a low severity vulnerability.
How to fix CVE-2023-1421?
To fix CVE-2023-1421: Update Mattermost to version v7.7 or higher.
Is CVE-2023-1421 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-1421 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-1421?
CVE-2023-1421 affects Mattermost Mattermost.
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