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CVE-2023-6458
Client side path traversal due to lack of route parameters validation
High7.1EPSS 0.64%
- Published
- Updated
- Reserved
- Assigned by
- Mattermost
Description
Mattermost webapp fails to validate route parameters in/<TEAM_NAME>/channels/<CHANNEL_NAME> allowing an attacker to perform a client-side path traversal.
Timeline
ID reserved
By Mattermost
- 5 days later
· 5 days later
Published
- 8 months later
· 8 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| MattermostCNA (assigner) | 3.1 | High7.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:L |
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.64% · top 49% of all CVEs (7 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Weakness
Affected products
- affected ≤ 9.1.1
- affected ≤ 9.0.2
- affected ≤ 8.1.4
- affected ≤ 7.8.13
- unaffected 9.1.2
- unaffected 9.0.3
- unaffected 8.1.5
- unaffected 7.8.14
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/mattermost/mattermost-server/v6GHSA-7664-hcp7-f497 (opens in a new tab)
- Gogithub.com/mattermost/mattermost/serverGHSA-7664-hcp7-f497 (opens in a new tab)
- Gogithub.com/mattermost/mattermost/server/v8GHSA-7664-hcp7-f497 (opens in a new tab)
What to do
Solution: Update Mattermost Server to versions 9.1.2, 9.0.3, 8.1.5, 7.8.14 or higher.
References (1)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-7664-hcp7-f497 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-6458)Record last updated .