MEDIUM5.3
GO-2026-4299
Mattermost Server allows attackers to log sensitive information via DEBUG REST API logging endpoint in github.com/mattermost/mattermost-server
Quick fix
GO-2026-4299 — 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 allows attackers to log sensitive information via DEBUG REST API logging endpoint 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-63wg-qmrv-7q66[ADVISORY]
- https://nvd.nist.gov/vuln/detail/CVE-2017-18896[ADVISORY]
- https://github.com/mattermost/mattermost[WEB]
- https://github.com/mattermost/mattermost/commit/3c34e2b2dcb0fde96a10e68d877aa7d0ab511669[WEB]
- https://github.com/mattermost/mattermost/commit/722fb1947a2e7395ccf16adce9206736d803a9f3[WEB]
- https://github.com/mattermost/mattermost/commit/d38328976e2c8bb0fab91e656042a0d8ac37bc76[WEB]
- https://mattermost.com/security-updates[WEB]