{"schema_version":"1.9.0","id":"GHSA-w65c-fvp5-fvc5","published":"2026-02-16T12:30:24Z","modified":"2026-02-23T19:40:56.803541Z","aliases":["CVE-2026-0998","GO-2026-4525"],"summary":"Mattermost Plugin Zoom fail to validate user identity and post ownership in the {{/api/v1/askPMI}} endpoint","details":"Mattermost versions 11.1.x <= 11.1.2, 10.11.x <= 10.11.9, 11.2.x <= 11.2.1 and Mattermost Plugin Zoom versions <=1.11.0 fail to validate user identity and post ownership in the {{/api/v1/askPMI}} endpoint which allows unauthorized users to start Zoom meetings as any user and overwrite arbitrary posts via direct API calls with manipulated user IDs and post data.. Mattermost Advisory ID: MMSA-2025-00534","affected":[{"package":{"name":"github.com/mattermost/mattermost-plugin-zoom","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost-plugin-zoom"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.12.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-w65c-fvp5-fvc5/GHSA-w65c-fvp5-fvc5.json"}}],"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-0998"},{"type":"WEB","url":"https://github.com/mattermost/mattermost-plugin-zoom/commit/a8b58c43625ab25746e451acc4f71515d52c8122"},{"type":"PACKAGE","url":"https://github.com/mattermost/mattermost-plugin-zoom"},{"type":"WEB","url":"https://mattermost.com/security-updates"}],"database_specific":{"cwe_ids":["CWE-862"],"github_reviewed":true,"github_reviewed_at":"2026-02-19T19:34:39Z","nvd_published_at":"2026-02-16T10:16:07Z","severity":"MODERATE"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"}]}