Project Subscriptions
No data.
No advisories yet.
Solution
Update Mattermost to versions 11.4.0, 11.3.1, 11.2.3, 10.11.11 or higher.
Workaround
No workaround given by the vendor.
| Link | Providers |
|---|---|
| https://mattermost.com/security-updates |
|
Mon, 16 Mar 2026 14:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Mon, 16 Mar 2026 11:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 Mattermost fails to limit the size of responses from integration action endpoints, which allows an authenticated attacker to cause server memory exhaustion and denial of service via a malicious integration server that returns an arbitrarily large response when a user clicks an interactive message button.. Mattermost Advisory ID: MMSA-2026-00571 | |
| Title | Denial of Service via Unbounded Memory Allocation in Integration Actions | |
| Weaknesses | CWE-789 | |
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: Mattermost
Published:
Updated: 2026-03-16T13:49:58.650Z
Reserved: 2026-02-13T11:02:52.828Z
Link: CVE-2026-2456
Updated: 2026-03-16T13:44:23.990Z
Status : Awaiting Analysis
Published: 2026-03-16T14:19:29.190
Modified: 2026-03-16T14:53:07.390
Link: CVE-2026-2456
No data.
OpenCVE Enrichment
No data.