Project Subscriptions
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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 12:15:00 +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 fail to properly validate User-Agent header tokens which allows an authenticated attacker to cause a request panic via a specially crafted User-Agent header. Mattermost Advisory ID: MMSA-2026-00586 | |
| Title | Denial of service via malformed User-Agent header in getBrowserVersion | |
| Weaknesses | CWE-1287 | |
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: Mattermost
Published:
Updated: 2026-03-16T13:49:55.332Z
Reserved: 2026-02-13T10:01:31.949Z
Link: CVE-2026-25783
Updated: 2026-03-16T13:43:39.912Z
Status : Awaiting Analysis
Published: 2026-03-16T14:18:23.593
Modified: 2026-03-16T14:53:07.390
Link: CVE-2026-25783
No data.
OpenCVE Enrichment
No data.