{"id":"CVE-2024-1402","summary":"Denial of service in mattermost mobile apps and server via emoji reactions","details":"Mattermost fails to check if a custom emoji reaction exists when sending it to a post and to limit the amount of custom emojis allowed to be added in a post, allowing an attacker sending a huge amount of non-existent custom emojis in a post to crash the mobile app of a user seeing the post and to crash the server due to overloading when clients attempt to retrive the aforementioned post. \n\n","aliases":["BIT-mattermost-2024-1402","GHSA-32h7-7j94-8fc2","GO-2024-2541"],"modified":"2026-08-12T03:51:18.080568582Z","published":"2024-02-09T15:09:18.157Z","related":["CGA-hjwm-8q7q-349m"],"database_specific":{"cna_assigner":"Mattermost","cwe_ids":["CWE-400"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/1xxx/CVE-2024-1402.json","unresolved_ranges":[{"extracted_events":[{"last_affected":"8.1.7"},{"last_affected":"9.1.4"},{"last_affected":"9.2.3"}],"source":"AFFECTED_FIELD"}]},"references":[{"type":"WEB","url":"https://mattermost.com/security-updates"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/1xxx/CVE-2024-1402.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-1402"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mattermost/mattermost","events":[{"introduced":"0"},{"last_affected":"77aeda5cedc8ef60d06da024202b8c7999efd671"},{"introduced":"987e843629fe3f11861fda23ceb66884f5973ef1"},{"last_affected":"6494fc712419d34ea44c8887981a7554e25c1eb6"},{"introduced":"b47be1c0f5787562ddf430dd5c5b8b3c35748b06"},{"last_affected":"9e52296cfb7c8eaf0b24e39a2ecea4bf58facd60"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"8.1.7"},{"introduced":"9.0.0"},{"last_affected":"9.1.4"},{"introduced":"9.2.0"},{"last_affected":"9.2.3"}],"source":"CPE_RANGE","cpe":"cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*"}}],"versions":["v8.1.7-rc3","v8.1.7","v9.1.4-rc1","v9.1.4","v8.1.7-rc2","v9.2.3-rc1","v9.2.3","v8.1.7-rc1","v9.1.3-rc1","v9.1.3","v8.1.6-rc1","v8.1.6","v9.2.2","v9.1.2","v8.1.5-rc2","v8.1.5","v8.1.5-rc1","v9.2.1","v9.1.2-rc1","v9.2.0-rc2","v9.2.0","@mattermost/types@9.2.0","@mattermost/client@9.2.0","v9.1.1-rc1","v9.1.1","v8.1.4-rc2","v8.1.4","v8.1.4-rc1","v9.1.0-rc2","v9.1.0","@mattermost/types@9.1.0","@mattermost/client@9.1.0","v8.1.3-rc2","v8.1.3","v8.1.3-rc1","v9.1.0-rc1","cloud-2023-09-26-1","v8.1.2-rc2","v8.1.2","v8.1.2-rc1","server/public/v0.0.9","v8.1.1-rc2","v8.1.1","@mattermost/types@8.1.1","@mattermost/client@8.1.1","v8.1.1-rc1","v8.1.0-rc2","v8.1.0","server/public/v0.0.8","cloud-2023-07-26-1","server/public/v0.0.7","server/public/v0.0.6","server/public/v0.0.5","cloud-2022-11-24-1","cloud-2022-11-11-1","cloud-2022-10-06-1","cloud-2022-09-08-1","cloud-2022-08-10-1","cloud-2022-07-20-1","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/cve-osv-conversion/osv-output/CVE-2024-1402.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"}]}