{"id":"CVE-2023-6458","aliases":["GHSA-7664-hcp7-f497","BIT-mattermost-2023-6458"],"title":"Mattermost Injection vulnerability","summary":"Mattermost Injection vulnerability","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:L","vendor":"mattermost","product":"github.com/mattermost/mattermost-server/v6","ecosystem":"go","affected":["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","github.com/mattermost/mattermost/server >= 9.1.0, < 9.1.2"],"patched":["github.com/mattermost/mattermost-server/v6 7.8.14","github.com/mattermost/mattermost/server/v8 8.1.5","github.com/mattermost/mattermost/server/v8 9.0.3","github.com/mattermost/mattermost/server 9.1.2"],"published":"2023-12-06","updated":"2026-09-10","sourceUpdated":"2026-09-10T03:49:59.553122863Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-7664-hcp7-f497","references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-6458"},{"url":"https://github.com/mattermost/mattermost"},{"url":"https://mattermost.com/security-updates"}],"tags":["osv","go"],"epss":0.00643,"epssPercentile":0.49092,"ingestedAt":"2026-09-12T03:13:01.762Z","slug":"CVE-2023-6458","body":"## Overview\n\nMattermost webapp fails to validate route parameters in/<TEAM_NAME>/channels/<CHANNEL_NAME> allowing an attacker to perform a client-side path traversal.\n\n\n\n## Affected packages\n\n- `github.com/mattermost/mattermost-server/v6 < 7.8.14`\n- `github.com/mattermost/mattermost/server/v8 < 8.1.5`\n- `github.com/mattermost/mattermost/server/v8 >= 9.0.0, < 9.0.3`\n- `github.com/mattermost/mattermost/server >= 9.1.0, < 9.1.2`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `github.com/mattermost/mattermost-server/v6 7.8.14`\n- `github.com/mattermost/mattermost/server/v8 8.1.5`\n- `github.com/mattermost/mattermost/server/v8 9.0.3`\n- `github.com/mattermost/mattermost/server 9.1.2`","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}