{"id":"CVE-2025-8402","summary":"Nil pointer dereference in bulk import crashes server","details":"Mattermost versions 10.8.x \u003c= 10.8.3, 10.5.x \u003c= 10.5.8, 9.11.x \u003c= 9.11.17, 10.10.x \u003c= 10.10.0, 10.9.x \u003c= 10.9.3 fail to validate import data which allows a system admin to crash the server via the bulk import feature.","aliases":["GHSA-h469-4fcf-p23h","GO-2025-3911"],"modified":"2026-09-18T03:45:28.727733480Z","published":"2025-08-21T17:01:43.420Z","database_specific":{"cna_assigner":"Mattermost","cwe_ids":["CWE-1287","CWE-476"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/8xxx/CVE-2025-8402.json","unresolved_ranges":[{"extracted_events":[{"introduced":"10.8.0"},{"last_affected":"10.8.3"},{"introduced":"10.5.0"},{"last_affected":"10.5.8"},{"introduced":"9.11.0"},{"last_affected":"9.11.17"},{"introduced":"10.10.0"},{"last_affected":"10.10.0"},{"introduced":"10.9.0"},{"last_affected":"10.9.3"}],"source":"AFFECTED_FIELD"}]},"references":[{"type":"WEB","url":"https://mattermost.com/security-updates"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/8xxx/CVE-2025-8402.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-8402"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mattermost/mattermost","events":[{"introduced":"0bc2ddd42375a75ab14e63f038165150d4f07659"},{"fixed":"11c36f4d1e44c36a85aa682becaa7519f63761cf"},{"introduced":"58bd34fd34cbd7d3da777d627b6cffdf8a532930"},{"fixed":"c602a4a78e1f60b9a97ee5bce509ecad4177340c"},{"introduced":"640a293b964f31c06cd7c6788353f3a0b5cb2f7b"},{"fixed":"6880f9b5908f20c6c4db1456d3a27603af01dd72"},{"introduced":"ee71ac08a7a08c35611aedd0cc2c5c0297ebedff"},{"fixed":"3b7a835de6c3e0a43212516f91d7e679daa56bb6"},{"introduced":"c8bd5c937551a4e9ad23f5a4fd8aaf7604d046dd"},{"last_affected":"c8bd5c937551a4e9ad23f5a4fd8aaf7604d046dd"}],"database_specific":{"source":["CPE_RANGE","CPE_STRING"],"cpe":["cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*","cpe:2.3:a:mattermost:mattermost_server:10.10.0:-:*:*:*:*:*:*"],"extracted_events":[{"introduced":"9.11.0"},{"fixed":"9.11.18"},{"introduced":"10.5.0"},{"fixed":"10.5.9"},{"introduced":"10.8.0"},{"fixed":"10.8.4"},{"introduced":"10.9.0"},{"fixed":"10.9.4"},{"introduced":"10.10.0-NA"},{"last_affected":"10.10.0-NA"}]}}],"versions":["10.10.0-NA","v10.8.4-rc4","v10.5.9-rc4","v9.11.18-rc4","v9.11.18-rc3","v10.5.9-rc3","v10.8.4-rc3","v10.5.9-rc2","v10.8.4-rc2","v9.11.18-rc2","v10.10.0","v9.11.18-rc1","v10.8.4-rc1","v10.5.9-rc1","v9.11.17","v10.5.8","v10.8.3","v10.8.2","v10.5.8-rc1","v9.11.17-rc1","mattermost-redux@10.8.0","@mattermost/types@10.8.0","@mattermost/client@10.8.0","v10.5.7","v9.11.16-rc1","v9.11.16","v10.5.6-rc1","v10.5.6","v9.11.15","v10.5.5","v10.5.5-rc1","v9.11.14","v10.5.4-rc2","v10.5.4","v9.11.13","v10.5.4-rc1","v9.11.13-rc1","v10.5.3","v9.11.12","v10.5.3-rc1","v9.11.12-rc1","v9.11.11-rc1","v9.11.11","v9.11.10","v10.5.2","v9.11.10-rc1","v9.11.9","v10.5.1","v10.5.1-rc2","v10.5.1-rc1","v9.11.9-rc2","v9.11.9-rc1","v10.5.0-rc6","v10.5.0","@mattermost/types@10.5.0","@mattermost/client@10.5.0","v9.11.8","v9.11.7-rc3","v9.11.7","v9.11.7-rc2","v9.11.7-rc1","v9.11.6","v9.11.6-rc2","v9.11.6-rc1","v9.11.5","v9.11.5-rc1","v9.11.4","v9.11.4-rc1","v9.11.3","v9.11.3-rc2","v9.11.3-rc1","v9.11.2","v9.11.2-rc2","v9.11.2-rc1","v9.11.1-rc1","v9.11.1","v9.11.0-rc3","v9.11.0","@mattermost/types@9.11.0","@mattermost/client@9.11.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-8402.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"}]}