CVE-2026-3116 — Improper Input Validation in Zoom Plugin Webhook Handler

CVE-2026-3116

Improper Input Validation in Zoom Plugin Webhook Handler PUBLISHED

Description (CNA)

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

Affected (CNA)

Vendor / product	Versions
Mattermost / Mattermost	affected 0 through 11.0.4; affected 0 through 11.1.3; affected 0 through 11.3.2; affected 0 through 10.11.11; unaffected 11.5.0; unaffected 11.4.1; unaffected 11.3.2; unaffected 11.2.4; unaffected 10.11.12

CWE

CWE-400

References

https://mattermost.com/security-updates

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.