{"id":"GHSA-6mx3-9qfh-77gj","summary":"Mattermost denial of service through long emoji value","details":"Mattermost fails to properly validate the length of the emoji value in the custom user status, allowing an attacker to send multiple times a very long string as an emoji value causing high resource consumption and possibly crashing the server.\n\n","aliases":["BIT-mattermost-2024-24988","CVE-2024-24988","GO-2024-2589"],"modified":"2026-07-17T21:09:26.766742971Z","published":"2024-02-29T09:30:34Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2024-02-29T22:48:30Z","nvd_published_at":"2024-02-29T08:15:47Z","cwe_ids":["CWE-400"],"severity":"MODERATE"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-24988"},{"type":"PACKAGE","url":"https://github.com/mattermost/mattermost"},{"type":"WEB","url":"https://mattermost.com/security-updates"}],"affected":[{"package":{"name":"github.com/mattermost/mattermost/server/v8","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8"},"ranges":[{"type":"SEMVER","events":[{"introduced":"9.3.0"},{"fixed":"9.3.1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/02/GHSA-6mx3-9qfh-77gj/GHSA-6mx3-9qfh-77gj.json"}},{"package":{"name":"github.com/mattermost/mattermost/server/v8","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8"},"ranges":[{"type":"SEMVER","events":[{"introduced":"9.2.0"},{"fixed":"9.2.5"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/02/GHSA-6mx3-9qfh-77gj/GHSA-6mx3-9qfh-77gj.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"}]}