CRITICAL9.8
GO-2026-4476
Mattermost Server password reset email requests can be sent to attacker-provided email addresses in github.com/mattermost/mattermost-server
Quick fix
GO-2026-4476 — github.com/mattermost/mattermost-server: upgrade to the fixed version with the command below.
go get github.com/mattermost/mattermost-server@v3.9.1-rc1+incompatibleDetails
Mattermost Server password reset email requests can be sent to attacker-provided email addresses in github.com/mattermost/mattermost-server
Are you affected?
Enter the version of the package you're using.
Affected packages
Go/github.com/mattermost/mattermost-server
Introduced in:
0Fixed in: 3.9.1-rc1+incompatibleFix
go get github.com/mattermost/mattermost-server@v3.9.1-rc1+incompatibleReferences
- https://github.com/advisories/GHSA-34cx-hvm4-vx7j[ADVISORY]
- https://nvd.nist.gov/vuln/detail/CVE-2017-18908[ADVISORY]
- https://github.com/mattermost/mattermost/commit/59139390ae927af2e879dbacfe4dadb1adac97c0[WEB]
- https://github.com/mattermost/mattermost/commit/d3bc11be3acd3a73e6358d958b91427e2584ea71[WEB]
- https://github.com/mattermost/mattermost/commit/e5065cf7575ee05c040945a4b00b7fd90bf39b83[WEB]
- https://mattermost.com/security-updates[WEB]