Unbounded Request Body Read in MS Teams Plugin {{/lifecycle}} Webhook Endpoint
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mattermost | Mattermost | unaffected |
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No data.
| Vendor | Product | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mattermost | Mattermost |
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Vendor Solution
Update Mattermost Plugins to versions 2.3.2.0 or higher.
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-x274-8qfc-hrgf | Mattermost MS Teams plugin doesn't limit the request body size on the /lifecycle webhook endpoint |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.317% probability within 30 days)
| Link | Providers |
|---|---|
| https://mattermost.com/security-updates |
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Mattermost mattermost Server
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| CPEs | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Mattermost mattermost Server
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| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:* |
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Mattermost
Mattermost mattermost |
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| Vendors & Products |
Mattermost
Mattermost mattermost |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| Description | Mattermost Plugins versions <=2.3.1 fail to limit the request body size on the {{/lifecycle}} 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-2026-00610 | |
| Title | Unbounded Request Body Read in MS Teams Plugin {{/lifecycle}} Webhook Endpoint | |
| Weaknesses | CWE-770 | |
| References |
| |
| Metrics |
cvssV3_1
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