{"id":"CVE-2023-4105","aliases":["GHSA-g3v6-r8p9-wxg9"],"url":"https://o3.security/vulnerability/CVE-2023-4105","summary":"Attachment of deleted message in a thread remains accessible and downloadable ","details":"Mattermost fails to delete the attachments when deleting a message in a thread allowing a simple user to still be able to access and download the attachment of a deleted message\n\n","published":"2023-08-11T06:11:57.438Z","modified":"2026-08-12T03:51:17.873277887Z","cvss":{"score":3.1,"severity":"LOW","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server/v6","fixedVersion":"7.9.6"},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server/v6","fixedVersion":"7.10.4"},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server/v6","fixedVersion":"7.8.8"}],"fix":null,"references":[{"type":"WEB","url":"https://mattermost.com/security-updates"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/4xxx/CVE-2023-4105.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-4105"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:17.873277887Z"}}