{"action":"Upgrade github.com/mattermost/mattermost-server to 4.3.0+incompatible or later.","affected":[{"fixed":"4.3.0+incompatible","introduced":"4.3.0-rc1+incompatible"}],"component":"github.com/mattermost/mattermost-server","cve_ids":["CVE-2017-18876"],"ecosystem":"Go","epss":0.00869,"exploited":false,"fixed_versions":["4.3.0+incompatible"],"ghsa_id":"GHSA-hjqh-j6rj-gh8q","id":"tcs_01M5KGC5RT4VEHHE6P7HC5ZMQX","modified_at":"2025-12-09T17:42:41.654181Z","published_at":"2025-12-08T21:31:36Z","references":["https://osv.dev/vulnerability/GO-2025-4187","https://github.com/advisories/GHSA-hjqh-j6rj-gh8q","https://nvd.nist.gov/vuln/detail/CVE-2017-18876","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"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"GO-2025-4187","url":"https://osv.dev/vulnerability/GO-2025-4187"}],"summary":"Mattermost Server is vulnerable to Path Traversal when files are stored locally in github.com/mattermost/mattermost-server"}