{"id":"CVE-2026-7521","aliases":["EUVD-2026-49852","GHSA-rxgw-2f9c-c2hh"],"status":"published","title":"SAML certificate deletion allows path traversal to delete arbitrary files outside the config directory","description":"Mattermost versions 11.8.x \u003c= 11.8.0, 11.7.x \u003c= 11.7.3, 11.6.x \u003c= 11.6.5, 10.11.x \u003c= 10.11.20 fail to verify file deletion path which allows an admin with SAML system-console write permissions to delete arbitrary files outside the config directory from the server via the remove file endpoint.. Mattermost Advisory ID: MMSA-2026-00666","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00439,"percentile":0.38434,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-22"],"published":"2026-07-28T13:58:31Z","modified":"2026-10-28T02:30:21Z","products":[{"vendor":"mattermost","product":"mattermost"},{"vendor":"mattermost","product":"mattermost_server"}],"references":[{"url":"https://mattermost.com/security-updates","tags":["vendor-advisory","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-7521","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-rxgw-2f9c-c2hh"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/7xxx/CVE-2026-7521.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-7521","title":"SAML certificate deletion allows path traversal to delete arbitrary files outside the config directory","description":"Mattermost versions 11.8.x \u003c= 11.8.0, 11.7.x \u003c= 11.7.3, 11.6.x \u003c= 11.6.5, 10.11.x \u003c= 10.11.20 fail to verify file deletion path which allows an admin with SAML system-console write permissions to delete arbitrary files outside the config directory from the server via the remove file endpoint.. Mattermost Advisory ID: MMSA-2026-00666","status":"published","published":"2026-07-28T13:58:31.551Z","modified":"2026-07-28T14:48:13.408Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:20:06.216584Z"}],"euvd":[{"id":"EUVD-2026-49852","description":"Mattermost versions 11.8.x \u003c= 11.8.0, 11.7.x \u003c= 11.7.3, 11.6.x \u003c= 11.6.5, 10.11.x \u003c= 10.11.20 fail to verify file deletion path which allows an admin with SAML system-console write permissions to delete arbitrary files outside the config directory from the server via the remove file endpoint.. Mattermost Advisory ID: MMSA-2026-00666","status":"published","published":"2026-07-28T13:58:31Z","modified":"2026-07-28T14:48:13Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H","level":"medium"}],"updated_at":"2026-11-02T18:02:31.399718Z"}],"ghsa":[{"id":"GHSA-rxgw-2f9c-c2hh","title":"Mattermost versions 11.8.x \u003c= 11.8.0, 11.7.x \u003c= 11.7.3, 11.6.x \u003c= 11.6.5, 10.11.x \u003c= 10.11.20...","description":"Mattermost versions 11.8.x \u003c= 11.8.0, 11.7.x \u003c= 11.7.3, 11.6.x \u003c= 11.6.5, 10.11.x \u003c= 10.11.20 fail to verify file deletion path which allows an admin with SAML system-console write permissions to delete arbitrary files outside the config directory from the server via the remove file endpoint.. Mattermost Advisory ID: MMSA-2026-00666","status":"published","published":"2026-07-28T15:32:19Z","modified":"2026-07-28T15:32:26Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H","level":"medium"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:09:52.627235Z"}],"nvd":[{"id":"CVE-2026-7521","description":"Mattermost versions 11.8.x \u003c= 11.8.0, 11.7.x \u003c= 11.7.3, 11.6.x \u003c= 11.6.5, 10.11.x \u003c= 10.11.20 fail to verify file deletion path which allows an admin with SAML system-console write permissions to delete arbitrary files outside the config directory from the server via the remove file endpoint.. Mattermost Advisory ID: MMSA-2026-00666","status":"published","published":"2026-07-28T15:17:51.51Z","modified":"2026-07-29T15:06:39.703Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:12:33.249634Z"}],"osv":[{"id":"CVE-2026-7521","title":"SAML certificate deletion allows path traversal to delete arbitrary files outside the config directory","description":"Mattermost versions 11.8.x \u003c= 11.8.0, 11.7.x \u003c= 11.7.3, 11.6.x \u003c= 11.6.5, 10.11.x \u003c= 10.11.20 fail to verify file deletion path which allows an admin with SAML system-console write permissions to delete arbitrary files outside the config directory from the server via the remove file endpoint.. Mattermost Advisory ID: MMSA-2026-00666","status":"published","published":"2026-07-28T13:58:31.551Z","modified":"2026-10-28T02:30:21.367201764Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H","level":"medium"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:45:16.748692Z"}]}}