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TI-2023-05923 Aliases CVE-2023-6458GHSA-7664-hcp7-f497

Client side path traversal due to lack of route parameters validation

Priority MEDIUM 43CWE-74Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.

Summary

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

Why it matters now

EPSS 0.00643 51st percentileScored 2026-11-07
Fix Fixed Mattermost (Mattermost): 9.1.2, 9.0.3, 8.1.5 +1github.com/mattermost/mattermost-server/v6 (Go): 7.8.14+2 more products

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
MattermostMattermostup to 9.1.1; up to 9.0.2; up to 8.1.4; up to 7.8.139.1.2, 9.0.3, 8.1.5, 7.8.14Patch availableCNA
—github.com/mattermost/mattermost-server/v6 (Go)before 7.8.147.8.14Patch availableGHSA-7664-hcp7-f497
—github.com/mattermost/mattermost/server/v8 (Go)before 8.1.58.1.5Patch availableGHSA-7664-hcp7-f497
—github.com/mattermost/mattermost/server/v8 (Go)9.0.0 to before 9.0.39.0.3Patch availableGHSA-7664-hcp7-f497
—github.com/mattermost/mattermost/server (Go)9.1.0 to before 9.1.29.1.2Patch availableGHSA-7664-hcp7-f497
  • Mattermost VendorMattermost Affected up to 9.1.1; up to 9.0.2; up to 8.1.4; up to 7.8.13 Fixed in 9.1.2, 9.0.3, 8.1.5, 7.8.14 Patch available CNA
  • github.com/mattermost/mattermost-server/v6 (Go) Vendor— Affected before 7.8.14 Fixed in 7.8.14 Patch available GHSA-7664-hcp7-f497
  • github.com/mattermost/mattermost/server/v8 (Go) Vendor— Affected before 8.1.5 Fixed in 8.1.5 Patch available GHSA-7664-hcp7-f497
  • github.com/mattermost/mattermost/server/v8 (Go) Vendor— Affected 9.0.0 to before 9.0.3 Fixed in 9.0.3 Patch available GHSA-7664-hcp7-f497
  • github.com/mattermost/mattermost/server (Go) Vendor— Affected 9.1.0 to before 9.1.2 Fixed in 9.1.2 Patch available GHSA-7664-hcp7-f497

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*before 7.8.14; 8.0.0 to before 8.1.5; 9.0.0 to before 9.0.3; 9.1.0 to before 9.1.2VulnerableMattermost
  • cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* Versions before 7.8.14; 8.0.0 to before 8.1.5; 9.0.0 to before 9.0.3; 9.1.0 to before 9.1.2 Vulnerable ·Mattermost

Remediation

  • Fix · CNA Mattermost (Mattermost) Fixed in 9.1.2, 9.0.3, 8.1.5, 7.8.14
  • Fix · GHSA-7664-hcp7-f497 github.com/mattermost/mattermost-server/v6 (Go) Fixed in 7.8.14 Advisory →
  • Fix · GHSA-7664-hcp7-f497 github.com/mattermost/mattermost/server/v8 (Go) Fixed in 8.1.5 Advisory →
  • Fix · GHSA-7664-hcp7-f497 github.com/mattermost/mattermost/server/v8 (Go) Fixed in 9.0.3 Advisory →
  • Fix · GHSA-7664-hcp7-f497 github.com/mattermost/mattermost/server (Go) Fixed in 9.1.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-6458
  2. 2026-10-03 Alias added: GHSA-7664-hcp7-f497
  3. 2026-10-21 EPSS moved to the 50th–90th percentile

References

Advisory 2

Other 1

  • TI-2025-18933 Arbitrary file read in Mattermost Boards via import & export board archive CVSS 3.1CRITICAL 9.9
  • TI-2025-04465 Path Traversal Leading to RCE by Any Authenticated Mattermost User CVSS 3.1CRITICAL 9.9
  • TI-2017-14068 An issue was discovered in Mattermost Server before 3.6.2. CVSS 3.1CRITICAL 9.8
  • TI-2017-14060 An issue was discovered in Mattermost Server before 3.8.2, 3.7.5, and 3.6.7. CVSS 3.1CRITICAL 9.8
  • TI-2017-14048 An issue was discovered in Mattermost Server before 4.1.0, 4.0.4, and 3.10.3. CVSS 3.1CRITICAL 9.8
  • TI-2025-14360 Arbitrary file read via block duplication in Mattermost Boards CVSS 3.1CRITICAL 9.9
See all 505 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences