{"action":"Upgrade github.com/mattermost/mattermost-server to 4.0.5 or later.","affected":[{"fixed":"4.0.5","introduced":"0"},{"fixed":"4.1.1","introduced":"4.1.0"},{"fixed":"4.2.0","introduced":"4.2.0-rc1"}],"component":"github.com/mattermost/mattermost-server","cve_ids":["CVE-2017-18898"],"ecosystem":"Go","epss":0.01106,"exploited":false,"fixed_versions":["4.0.5","4.1.1","4.2.0"],"ghsa_id":"GHSA-9589-mq83-f749","id":"tcs_01M5KF4WE6QW550XYQJ7JBTHK9","modified_at":"2026-02-03T03:02:36.164312Z","published_at":"2022-05-24T17:21:05Z","references":["https://osv.dev/vulnerability/GHSA-9589-mq83-f749","https://nvd.nist.gov/vuln/detail/CVE-2017-18898","https://github.com/grundleborg/mattermost/commit/5286318c72aa230f33f89df3b4cbdc33a0822a93","https://github.com/mattermost/mattermost/commit/5bf6f06c02c368b9c73a8be2d2d8795b3405b22b","https://github.com/mattermost/mattermost/commit/5c22176c963a7393241872073547f30083efe218","https://github.com/mattermost/mattermost","https://mattermost.com/security-updates"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"GHSA-9589-mq83-f749","url":"https://osv.dev/vulnerability/GHSA-9589-mq83-f749"}],"summary":"Mattermost Server is vulnerable to DoS through maliciously crafted posts"}