CVE-2026-24661
Low
Description
Mattermost Plugins versions <=2.1.3.0 fail to limit the request body size on the {{/changes}} webhook endpoint which allows an authenticated attacker to cause memory exhaustion and denial of service via sending an oversized JSON payload. Mattermost Advisory ID: MMSA-2026-00611
SeverityLow
CVSS3.7
Exploit probability—
Product
Mattermost
PublishedApr 9, 2026
First seenApr 9, 2026
Weakness typeCWE-770Allocation of resources without limits
How to fix
Update
- mattermost mattermost2.3.2.0 or later
- github.com/mattermost/mattermost-plugin-msteams1.15.1-0.20260213190728-6fe4d295592e or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mattermost mattermost | v < 2.3.2.0 | 2.3.2.0 |
| github.com/mattermost/mattermost-plugin-msteamsGo | v < 1.15.1-0.20260213190728-6fe4d295592e | 1.15.1-0.20260213190728-6fe4d295592e |
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