{"schema_version":"1.7.3","id":"GO-2026-4300","published":"2026-01-13T16:42:40Z","modified":"2026-03-03T04:57:51.619208Z","aliases":["CVE-2017-18898","GHSA-9589-mq83-f749"],"summary":"Mattermost Server is vulnerable to DoS through maliciously crafted posts in github.com/mattermost/mattermost-server","details":"Mattermost Server is vulnerable to DoS through maliciously crafted posts in github.com/mattermost/mattermost-server","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":"4.0.5+incompatible"},{"introduced":"4.1.0+incompatible"},{"fixed":"4.1.1+incompatible"},{"introduced":"4.2.0-rc1+incompatible"},{"fixed":"4.2.0+incompatible"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2026-4300.json"}}],"references":[{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-9589-mq83-f749"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-18898"},{"type":"WEB","url":"https://github.com/grundleborg/mattermost/commit/5286318c72aa230f33f89df3b4cbdc33a0822a93"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/5bf6f06c02c368b9c73a8be2d2d8795b3405b22b"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/5c22176c963a7393241872073547f30083efe218"},{"type":"WEB","url":"https://mattermost.com/security-updates"}],"database_specific":{"review_status":"UNREVIEWED","url":"https://pkg.go.dev/vuln/GO-2026-4300"}}