{"id":"CVE-2023-2783","aliases":["EUVD-2023-1677","GHSA-455c-vqrf-mghr"],"status":"published","title":"App Framework does not checks for the secret provided in the incoming webhook request","description":"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 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app framework"}],"references":[{"url":"https://mattermost.com/security-updates","tags":["x_transferred","Vendor Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-2783","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-455c-vqrf-mghr"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/2xxx/CVE-2023-2783.json","tags":["advisory"]},{"url":"https://github.com/mattermost/mattermost-server","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-2783","title":"App Framework does not checks for the secret provided in the incoming webhook request","description":"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","status":"published","published":"2023-06-16T08:39:26.096Z","modified":"2024-12-06T23:03:51.327Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:35:24.004321Z"}],"euvd":[{"id":"EUVD-2023-1677","description":"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","status":"published","published":"2023-06-16T08:39:26Z","modified":"2024-12-06T23:03:51Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-03T00:04:38.652605Z"}],"ghsa":[{"id":"GHSA-455c-vqrf-mghr","title":"Mattermost Server Missing Authorization vulnerability","description":"Mattermost Apps Framework fails to verify that a secret provided in the incoming webhook request allowing an 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Apps.\n\n","status":"published","published":"2023-06-16T09:15:09.72Z","modified":"2026-06-17T05:53:25.863Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:08:06.335469Z"}],"osv":[{"id":"CVE-2023-2783","title":"App Framework does not checks for the secret provided in the incoming webhook request","description":"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","status":"published","published":"2023-06-16T08:39:26.096Z","modified":"2026-10-28T02:30:59.677269072Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:44:31.135751Z"},{"id":"GHSA-455c-vqrf-mghr","title":"Mattermost Server Missing Authorization vulnerability","description":"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.","status":"published","published":"2023-06-16T09:30:24Z","modified":"2025-07-25T14:50:30Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:46:36.434231Z"}]}}