Mattermost Zoom vulnerabilities

2 CVEs affecting Mattermost Zoom, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2026-0998, published 2026-02-16.

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Known exploited (CISA KEV) first, then by EPSS exploit probability.

• CVE-2026-0998, published 2026-02-16. Medium severity, CVSS 4.3. EPSS: 0.2% chance of exploitation in the next 30 days. 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}}…
• CVE-2026-0997, published 2026-02-16. Medium severity, CVSS 4.3. EPSS: 0.2% chance of exploitation in the next 30 days. 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 the authenticated user when processing…