Vulnerability Database

310,472

Total vulnerabilities in the database

CVE-2023-6458

Mattermost webapp fails to validate route parameters in/<TEAM_NAME>/channels/<CHANNEL_NAME> allowing an attacker to perform a client-side path traversal.

Published: Dec 6, 2023
Updated: Nov 16, 2025
CVE: CVE-2023-6458
GHSA: GHSA-7664-hcp7-f497
Severity: High
Exploit:

CVSS v3:

Severity: High
Score: 7.1
AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:L

CWEs:

OWASP TOP 10:

A5 - Broken Access Control

Affected Software
References

Software	From	Fixed in
github.com/mattermost/mattermost-server/v6	-	7.8.14
github.com/mattermost/mattermost/server/v8	-	8.1.5
github.com/mattermost/mattermost/server/v8	9.0.0	9.0.3
mattermost / mattermost_server	9.1.0	9.1.2
mattermost / mattermost_server	9.0.0	9.0.3
mattermost / mattermost_server	8.0.0	8.1.5
mattermost / mattermost_server	-	7.8.14
github.com/mattermost/mattermost/server	9.1.0	9.1.2

https://mattermost.com/security-updates

Deep Security Visibility Without the Complexity

SynScan provides clear, real-time security insights so you can monitor your attack surface, spot risks early, and act fast—without extra complexity.

No setup fees
5-min deployment
Cancel anytime

Book a Demo