Moderate severityNVD Advisory· Published Feb 16, 2026· Updated Feb 17, 2026
Mattermost Zoom Plugin allows unauthorized meeting creation and post modification via insufficient API access controls
CVE-2026-0998
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
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/mattermost/mattermost-plugin-zoomGo | < 1.12.0 | 1.12.0 |
Affected products
3- ghsa-coords2 versionspkg:golang/github.com/mattermost/mattermost-plugin-zoompkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Leap%2015.6
< 1.12.0+ 1 more
- (no CPE)range: < 1.12.0
- (no CPE)range: < 0.0.20260226T182644-150000.1.149.1
- Range: 11.1.0
Patches
Vulnerability mechanics
References
4- github.com/advisories/GHSA-w65c-fvp5-fvc5ghsaADVISORY
- mattermost.com/security-updatesghsavendor-advisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-0998ghsaADVISORY
- github.com/mattermost/mattermost-plugin-zoom/commit/a8b58c43625ab25746e451acc4f71515d52c8122ghsaWEB
News mentions
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