{"id":"CVE-2023-2783","aliases":["GHSA-455c-vqrf-mghr"],"url":"https://o3.security/vulnerability/CVE-2023-2783","summary":"App Framework does not checks for the secret provided in the incoming webhook request","details":"Mattermost Apps Framework fails to verify that a secret provided in the incoming webhook request allowing an attacker to modify the contents of the post sent by the Apps.\n\n","published":"2023-06-16T08:39:26.096Z","modified":"2026-08-12T03:51:36.442303633Z","cvss":{"score":4.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server/v6","fixedVersion":"7.10.1"},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server/v6","fixedVersion":"7.9.4"},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server/v6","fixedVersion":"7.8.5"},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server/v6","fixedVersion":"6.0.0-20230511130429-1629a6ca7fed"}],"fix":null,"references":[{"type":"WEB","url":"https://mattermost.com/security-updates"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/2xxx/CVE-2023-2783.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-2783"},{"type":"PACKAGE","url":"https://github.com/mattermost/mattermost-server"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:36.442303633Z"}}