{"id":"GO-2026-4302","summary":"Mattermost Server vulnerable to XSS via an uploaded file in github.com/mattermost/mattermost-server","details":"Mattermost Server vulnerable to XSS via an uploaded file in github.com/mattermost/mattermost-server","aliases":["CVE-2017-18904","GHSA-8pff-p3gx-w4jf"],"modified":"2026-03-03T04:57:53.378340Z","published":"2026-01-13T16:42:40Z","database_specific":{"review_status":"UNREVIEWED","url":"https://pkg.go.dev/vuln/GO-2026-4302"},"references":[{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-8pff-p3gx-w4jf"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-18904"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/6a2754376c8c8270be5e11e3fdab589659d0cc8d"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/bde06a7bc3a03a56da224c1ffcd8bffb0af8071b"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/f06c5bef4d78966c60b153bbec6eea4ec0be9e68"},{"type":"WEB","url":"https://mattermost.com/security-updates"}],"affected":[{"package":{"name":"github.com/mattermost/mattermost-server","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost-server"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.9.2+incompatible"},{"introduced":"3.10.0+incompatible"},{"fixed":"3.10.2+incompatible"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2026-4302.json"}}],"schema_version":"1.7.3"}