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TI-2022-01837 Aliases CVE-2022-1982GHSA-gwpf-95jc-63rv

A crafted SVG attachment can crash a Mattermost server

Priority LOW 31CWE-400Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-400.

Summary

Uncontrolled resource consumption in Mattermost version 6.6.0 and earlier allows an authenticated attacker to crash the server via a crafted SVG attachment on a post.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00943 61st percentileScored 2026-11-07
Fix Fixed github.com/mattermost/mattermost-server (Go): 6.6.1, 6.5.1, 6.4.3 +1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MattermostMattermost6.5.x 6.5.0; 6.6.x 6.6.0; 5.x – 5.39; 6.x – 6.3.7; 6.4.x – 6.4.2—No fix listedCNA
—github.com/mattermost/mattermost-server (Go)6.6.0 to before 6.6.16.6.1Patch availableGHSA-gwpf-95jc-63rv
—github.com/mattermost/mattermost-server (Go)6.5.0 to before 6.5.16.5.1Patch availableGHSA-gwpf-95jc-63rv
—github.com/mattermost/mattermost-server (Go)6.4.0 to before 6.4.36.4.3Patch availableGHSA-gwpf-95jc-63rv
—github.com/mattermost/mattermost-server (Go)5.0.0 to before 6.3.86.3.8Patch availableGHSA-gwpf-95jc-63rv
  • Mattermost VendorMattermost Affected 6.5.x 6.5.0; 6.6.x 6.6.0; 5.x – 5.39; 6.x – 6.3.7; 6.4.x – 6.4.2 Fixed in — No fix listed CNA
  • github.com/mattermost/mattermost-server (Go) Vendor— Affected 6.6.0 to before 6.6.1 Fixed in 6.6.1 Patch available GHSA-gwpf-95jc-63rv
  • github.com/mattermost/mattermost-server (Go) Vendor— Affected 6.5.0 to before 6.5.1 Fixed in 6.5.1 Patch available GHSA-gwpf-95jc-63rv
  • github.com/mattermost/mattermost-server (Go) Vendor— Affected 6.4.0 to before 6.4.3 Fixed in 6.4.3 Patch available GHSA-gwpf-95jc-63rv
  • github.com/mattermost/mattermost-server (Go) Vendor— Affected 5.0.0 to before 6.3.8 Fixed in 6.3.8 Patch available GHSA-gwpf-95jc-63rv

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*5.0.0 to before 6.3.8; 6.4.0 to before 6.4.3VulnerableMattermost
cpe:2.3:a:mattermost:mattermost_server:6.5.0:*:*:*:*:*:*:*6.5.0VulnerableMattermost
cpe:2.3:a:mattermost:mattermost_server:6.6.0:*:*:*:*:*:*:*6.6.0VulnerableMattermost
  • cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* Versions 5.0.0 to before 6.3.8; 6.4.0 to before 6.4.3 Vulnerable ·Mattermost
  • cpe:2.3:a:mattermost:mattermost_server:6.5.0:*:*:*:*:*:*:* Versions 6.5.0 Vulnerable ·Mattermost
  • cpe:2.3:a:mattermost:mattermost_server:6.6.0:*:*:*:*:*:*:* Versions 6.6.0 Vulnerable ·Mattermost

Remediation

  • Fix · GHSA-gwpf-95jc-63rv github.com/mattermost/mattermost-server (Go) Fixed in 6.6.1 Advisory →
  • Fix · GHSA-gwpf-95jc-63rv github.com/mattermost/mattermost-server (Go) Fixed in 6.5.1 Advisory →
  • Fix · GHSA-gwpf-95jc-63rv github.com/mattermost/mattermost-server (Go) Fixed in 6.4.3 Advisory →
  • Fix · GHSA-gwpf-95jc-63rv github.com/mattermost/mattermost-server (Go) Fixed in 6.3.8 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-1982
  2. 2026-10-03 Alias added: GHSA-gwpf-95jc-63rv

References

Advisory 2

Other 3

  • 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