Mattermost versions <=11.9 11.0.9 11.4.8 11.7.7 10.22.11.0 fail to recover from handler panics, which allows an authenticated user to crash the plugin via a post-action request with an unexpected field type.. Mattermost Advisory ID: MMSA-2026-00701
Metrics
Affected Vendors & Products
References
| Link | Providers |
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| https://mattermost.com/security-updates |
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History
Wed, 14 Oct 2026 19:45:00 +0000
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| CPEs | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | |
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Mattermost mattermost Server
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Mon, 14 Sep 2026 21:00:00 +0000
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ssvc
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Mon, 14 Sep 2026 14:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Mattermost versions <=11.9 11.0.9 11.4.8 11.7.7 10.22.11.0 fail to recover from handler panics, which allows an authenticated user to crash the plugin via a post-action request with an unexpected field type.. Mattermost Advisory ID: MMSA-2026-00701 | |
| Title | MS Calendar plugin: unrecovered handler panics from malformed post-action requests could crash the plugin process | |
| Weaknesses | CWE-704 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: Mattermost
Published: 2026-09-14T13:52:24.602Z
Updated: 2026-09-14T19:23:01.298Z
Reserved: 2026-09-07T09:35:28.446Z
Link: CVE-2026-86348
Updated: 2026-09-14T19:15:28.648Z
Status : Analyzed
Published: 2026-09-14T14:17:15.570
Modified: 2026-10-14T19:28:53.743
Link: CVE-2026-86348
No data.