{"id":"CVE-2026-13411","aliases":["EUVD-2026-108140","GHSA-2273-qcv6-r2xj"],"status":"published","title":"Null condition in Playbooks import crashes the plugin","description":"Mattermost versions 11.7.x \u003c= 11.7.11 fail to validate null elements when decoding playbook import conditions which allows an authenticated attacker to crash the Playbooks plugin instance-wide via a crafted import request containing a null condition. Mattermost Advisory ID: MMSA-2026-00709","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00328,"percentile":0.2622,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-754"],"published":"2026-10-22T10:46:05Z","modified":"2026-11-04T02:48:17Z","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-2026-13411","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-2273-qcv6-r2xj"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/13xxx/CVE-2026-13411.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-13411","title":"Null condition in Playbooks import crashes the plugin","description":"Mattermost versions 11.7.x \u003c= 11.7.11 fail to validate null elements when decoding playbook import conditions which allows an authenticated attacker to crash the Playbooks plugin instance-wide via a crafted import request containing a null condition. Mattermost Advisory ID: MMSA-2026-00709","status":"published","published":"2026-10-22T10:46:05.465Z","modified":"2026-10-22T13:37:46.805Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-754"],"updated_at":"2026-11-02T14:19:50.24628Z"}],"euvd":[{"id":"EUVD-2026-108140","description":"Mattermost versions 11.7.x \u003c= 11.7.11 fail to validate null elements when decoding playbook import conditions which allows an authenticated attacker to crash the Playbooks plugin instance-wide via a crafted import request containing a null condition. Mattermost Advisory ID: MMSA-2026-00709","status":"published","published":"2026-10-22T10:46:05Z","modified":"2026-10-22T13:37:46Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T16:59:35.198677Z"}],"ghsa":[{"id":"GHSA-2273-qcv6-r2xj","title":"Mattermost versions 11.7.x \u003c= 11.7.11 fail to validate null elements when decoding playbook...","description":"Mattermost versions 11.7.x \u003c= 11.7.11 fail to validate null elements when decoding playbook import conditions which allows an authenticated attacker to crash the Playbooks plugin instance-wide via a crafted import request containing a null condition. Mattermost Advisory ID: MMSA-2026-00709","status":"published","published":"2026-10-22T12:31:18Z","modified":"2026-10-22T12:31:25Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-754"],"updated_at":"2026-11-02T15:14:15.712154Z"}],"nvd":[{"id":"CVE-2026-13411","description":"Mattermost versions 11.7.x \u003c= 11.7.11 fail to validate null elements when decoding playbook import conditions which allows an authenticated attacker to crash the Playbooks plugin instance-wide via a crafted import request containing a null condition. Mattermost Advisory ID: MMSA-2026-00709","status":"published","published":"2026-10-22T11:17:52.843Z","modified":"2026-11-02T18:32:24.093Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-754"],"updated_at":"2026-11-02T20:51:42.332165Z"}],"osv":[{"id":"CVE-2026-13411","title":"Null condition in Playbooks import crashes the plugin","description":"Mattermost versions 11.7.x \u003c= 11.7.11 fail to validate null elements when decoding playbook import conditions which allows an authenticated attacker to crash the Playbooks plugin instance-wide via a crafted import request containing a null condition. Mattermost Advisory ID: MMSA-2026-00709","status":"published","published":"2026-10-22T10:46:05.465Z","modified":"2026-11-04T02:48:17.665834962Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-754"],"updated_at":"2026-11-04T03:25:28.514393Z"}]}}