Mattermost Plugin Zoom fail to validate user identity and post ownership in the {{/api/v1/askPMI}} endpoint in github.com/mattermost/mattermost-plugin-zoom
Mattermost Plugin Zoom fail to validate user identity and post ownership in the {{/api/v1/askPMI}} endpoint in github.com/mattermost/mattermost-plugin-zoom
02 / AFFECTED SOFTWARE
Affected packages
71 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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
Mattermost Plugin Zoom fail to validate user identity and post ownership in the {{/api/v1/askPMI}} endpoint in github.com/mattermost/mattermost-plugin-zoom
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
05 / REFERENCES
Further evidence
- https://github.com/mattermost/mattermost-plugin-zoom
- https://github.com/mattermost/mattermost-plugin-zoom/commit/a8b58c43625ab25746e451acc4f71515d52c8122
- https://mattermost.com/security-updates
- https://nvd.nist.gov/vuln/detail/CVE-2026-0998
- https://github.com/advisories/GHSA-w65c-fvp5-fvc5
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/0xxx/CVE-2026-0998.json