{"id":"CVE-2019-20880","details":"An issue was discovered in Mattermost Server before 5.8.0, 5.7.2, 5.6.5, and 4.10.7. It allows attackers to cause a denial of service (memory consumption) via OpenGraph.","modified":"2026-04-10T04:17:14.417923Z","published":"2020-06-19T17:15:13.490Z","references":[{"type":"ADVISORY","url":"https://mattermost.com/security-updates/"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mattermost/mattermost-server","events":[{"introduced":"0"},{"fixed":"849fafe8f4c3a25b3cd712a580a74aa75a4829e2"},{"introduced":"0c1207215852a8726c3f09dea157d597fec368df"},{"fixed":"7f10b8349810f571de096e2430bcb56ab3527ae1"},{"introduced":"7e5fda43bda67cd061e527b64046f241c2d6cc32"},{"fixed":"2b6f2b07544c63da58a920f3e7791b9f510ff0c2"},{"introduced":"0"},{"last_affected":"a410b7d6b5a852b99f8bf78ea3cb1392bc49de56"},{"introduced":"0"},{"last_affected":"f2c4408013a469564661e10c44b6b3b4d8340323"},{"introduced":"0"},{"last_affected":"6b05e34f0e19715945719d7aefa9bf953f47fa7b"},{"introduced":"0"},{"last_affected":"24f11a12758fe75ce06269be7f9fb7bb790aec43"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"4.10.7"},{"introduced":"5.6.0"},{"fixed":"5.6.5"},{"introduced":"5.7.0"},{"fixed":"5.7.2"},{"introduced":"0"},{"last_affected":"5.8.0-rc1"},{"introduced":"0"},{"last_affected":"5.8.0-rc2"},{"introduced":"0"},{"last_affected":"5.8.0-rc3"},{"introduced":"0"},{"last_affected":"5.8.0-rc4"}]}}],"versions":["v0.5.0","v4.10.0","v4.10.0-rc1","v4.10.0-rc2","v4.10.0-rc3","v4.10.0-rc4","v4.10.0-rc5","v4.10.1","v4.10.1-rc1","v4.10.2","v4.10.2-rc1","v4.10.3","v4.10.3-rc1","v4.10.4","v4.10.4-rc1","v4.10.5","v4.10.5-rc1","v4.10.6","v4.10.6-rc1","v4.2.0-rc1","v4.3.0-rc1","v4.4.0-rc1","v4.5.0-rc1","v4.6.0-rc1","v4.6.0-rc2","v4.7.0-rc1","v4.8.0-rc1","v4.9.0-rc1","v5.0.0-rc1","v5.1.0-rc1","v5.2.0-rc1","v5.2.0-rc2","v5.6.0","v5.6.0-rc6","v5.6.1","v5.6.1-rc1","v5.6.1-rc2","v5.6.1-rc3","v5.6.2","v5.6.2-rc1","v5.6.3","v5.6.3-rc1","v5.6.4","v5.6.4-rc1","v5.7.0","v5.7.0-rc6","v5.7.1","v5.7.1-rc1","v5.8.0","v5.8.0-rc1","v5.8.0-rc2","v5.8.0-rc3","v5.8.0-rc4"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20880.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}