{"id":"CVE-2019-20858","details":"An issue was discovered in Mattermost Server before 5.15.0. It allows attackers to cause a denial of service (CPU consumption) via crafted characters in a SQL LIKE clause to an APIv4 endpoint.","modified":"2026-05-30T15:04:06.778163Z","published":"2020-06-19T15:15:10.633Z","references":[{"type":"ADVISORY","url":"https://mattermost.com/security-updates/"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mattermost/mattermost","events":[{"introduced":"0"},{"fixed":"f4f7fd0829d74fcd5e290fd1ba76845af18e553e"}],"database_specific":{"source":"CPE_RANGE","extracted_events":[{"introduced":"0"},{"fixed":"5.15.0"}],"cpe":"cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*"}}],"versions":["v5.15.0-rc3","v5.15.0-rc2","v5.15.0-rc1","v5.14.0-rc5","v5.14.0","v5.14.0-rc4","v5.14.0-rc3","v5.14.0-rc2","v5.14.0-rc1","v5.2.0-rc2","v5.2.0-rc1","v5.1.0-rc1","v5.0.0-rc1","v4.10.0-rc1","v4.9.0-rc1","v4.8.0-rc1","v4.7.0-rc1","v4.6.0-rc2","v4.6.0-rc1","v4.5.0-rc1","v4.4.0-rc1","v4.3.0-rc1","v4.2.0-rc1","v0.5.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-20858.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"}]}