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CVE-2023-6458

9.8 criticalEPSS 0.6%

Critical (9.8) in mattermost mattermost server. EPSS 0.6% chance of exploitation in the next 30 days. Fixed in github.com/mattermost/mattermost-server/v6 7.8.14.

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

Severity

CVSS 3.1

9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
0.6% chance of exploitation in the next 30 days; higher than 50% of CVEs (scores of 2026-10-31)
CWEs
CWE-22, CWE-74
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-7664-hcp7-f497Gogithub.com/mattermost/mattermost-server/v6<7.8.147.8.14
GHSA-7664-hcp7-f497Gogithub.com/mattermost/mattermost/server/v8<8.1.58.1.5
GHSA-7664-hcp7-f497Gogithub.com/mattermost/mattermost/server/v8>=9.0.0 <9.0.39.0.3
GHSA-7664-hcp7-f497Gogithub.com/mattermost/mattermost/server>=9.1.0 <9.1.29.1.2

References

Check your stackJSON