VDB

GO-2025-4190

GO-2025-4190 PUBLISHED CVSS 9.300000190734863 CRITICAL

Mattermost Server is vulnerable to XSS attacks against an OAuth 2.0 allow/deny page in github.com/mattermost/mattermost-server

Risk Scores

CVSS 4.0
9.300000190734863
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Affected Products

VendorProductVersions
github.commattermost/mattermost-server0, 4.2.0+incompatible, 4.3.0-rc1+incompatible

Timeline

  • Dec 8, 2025 CVE Published
  • Mar 3, 2026 CVE Updated
  • May 1, 2026 Security Advisory

References

Open in Interactive Console →
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