CVE-2026-3116
Improper Input Validation in Zoom Plugin Webhook Handler
CVSS Score
4.9
EPSS Score
0.0%
EPSS Percentile
0th
Mattermost Plugins versions <=11.4 11.0.4 11.1.3 11.3.2 10.11.11.0 fail to validate incoming request size which allows an authenticated attacker to cause service disruption via the webhook endpoint. Mattermost Advisory ID: MMSA-2026-00589
| CWE | CWE-400 |
| Vendor | mattermost |
| Product | mattermost |
| Published | Mar 26, 2026 |
| Last Updated | Mar 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Mattermost / Mattermost
0 ≤ 11.0.4 0 ≤ 11.1.3 0 ≤ 11.3.2 0 ≤ 10.11.11
Credits
thecybertantrik