MEDIUM6.1
GO-2026-4317
Mattermost Server does not neutralize HTML content in an Email template field in github.com/mattermost/mattermost-server
Quick fix
GO-2026-4317 — github.com/mattermost/mattermost-server: upgrade to the fixed version with the command below.
go get github.com/mattermost/mattermost-server@v4.0.5+incompatibleDetails
Mattermost Server does not neutralize HTML content in an Email template field 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: 4.0.5+incompatibleFix
go get github.com/mattermost/mattermost-server@v4.0.5+incompatibleReferences
- https://github.com/advisories/GHSA-wj5w-qghh-gvqp[ADVISORY]
- https://nvd.nist.gov/vuln/detail/CVE-2017-18892[ADVISORY]
- https://github.com/mattermost/mattermost/commit/4e05fbffed4d7ad75c0bb55d67d2c6f7cf9eaad6[WEB]
- https://github.com/mattermost/mattermost/commit/d76946bdb545aba4088943fc523dabb459d22873[WEB]
- https://github.com/mattermost/mattermost/commit/f5167f3ba645b829f4c28530e13be6c3db967255[WEB]
- https://mattermost.com/security-updates[WEB]