{"cve":"CVE-2026-0998","nvd":{"published":"2026-02-16T10:16:07.983","modified":"2026-06-17T10:11:44.830","status":"Analyzed","description":"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","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","score":4.3},"cwes":["CWE-862"],"references":["https://mattermost.com/security-updates"],"products":["mattermost:mattermost_server","mattermost:zoom"],"source":"nvd","synced_at":"2026-10-19T22:23:35.260773158+00:00"},"epss":{"cve":"CVE-2026-0998","score":0.00177,"percentile":0.07239,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-w65c-fvp5-fvc5","url":"https://osv.dev/vulnerability/GHSA-w65c-fvp5-fvc5","summary":"Mattermost Plugin Zoom fail to validate user identity and post ownership in the {{/api/v1/askPMI}} endpoint","modified":"2026-02-23T19:40:56.803541Z","packages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-plugin-zoom","purl":"pkg:golang/github.com/mattermost/mattermost-plugin-zoom","ranges":["<1.12.0"],"fixed":["1.12.0"]}]},{"id":"GO-2026-4525","url":"https://osv.dev/vulnerability/GO-2026-4525","summary":"Mattermost Plugin Zoom fail to validate user identity and post ownership in the {{/api/v1/askPMI}} endpoint in github.com/mattermost/mattermost-plugin-zoom","modified":"2026-02-23T19:40:56.803541Z","packages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-plugin-zoom","purl":"pkg:golang/github.com/mattermost/mattermost-plugin-zoom","ranges":["<1.12.0"],"fixed":["1.12.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}