Vulnerability Report: GO-2025-4186
- CVE-2017-18875, GHSA-9rr5-q43r-ccv4
- Affects: github.com/mattermost/mattermost-server
- Published: Dec 08, 2025
- Unreviewed
Mattermost Server does not prevent System Admin from arbitrary file creation in github.com/mattermost/mattermost-server. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. (If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.) The additional affected modules and versions are: github.com/mattermost/mattermost-server before v4.1.2-0.20171004201910-6be8113eb60c, from v4.2.0-rc1.0.20171004154238-fadd9514f6e7 before v4.2.1-0.20171004194140-6d3cb2ce07fc.
For detailed information about this vulnerability, visit https://github.com/advisories/GHSA-9rr5-q43r-ccv4 or https://nvd.nist.gov/vuln/detail/CVE-2017-18875.
Affected Modules
-
PathGo VersionsCustom Versions*
-
from v4.3.0-rc1+incompatible before v4.3.0+incompatiblebefore 4.1.2-0.20171004201910-6be8113eb60c, from 4.2.0-rc1.0.20171004154238-fadd9514f6e7 before 4.2.1-0.20171004194140-6d3cb2ce07fc
*Custom versions, which can't be mapped automatically to standard Go module versions, are ignored by govulncheck. (See this note on versions for more details.)
Aliases
References
- https://github.com/advisories/GHSA-9rr5-q43r-ccv4
- https://nvd.nist.gov/vuln/detail/CVE-2017-18875
- https://github.com/mattermost/mattermost/commit/6be8113eb60cf5ddd2dc1c3f4db05cae0c183086
- https://github.com/mattermost/mattermost/commit/6d3cb2ce07fc799832081e93843b405b390057fa
- https://github.com/mattermost/mattermost/commit/fadd9514f6e71590aba781a7035e1de4150137b0
- https://mattermost.com/security-updates
- https://vuln.go.dev/ID/GO-2025-4186.json