Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to limit the size of the request body on the start meeting API endpoint, which allows an authenticated attacker to cause resource exhaustion or denial of service via a crafted oversized HTTP POST request to {{/api/v1/meetings}}.. Mattermost Advisory ID: MMSA-2026-00608
Metrics
Affected Vendors & Products
References
| Link | Providers |
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| https://mattermost.com/security-updates |
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History
Mon, 18 May 2026 19:30:00 +0000
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| CPEs | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | |
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Mon, 18 May 2026 15:30:00 +0000
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Mon, 18 May 2026 09:45:00 +0000
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Mon, 18 May 2026 08:00:00 +0000
| Type | Values Removed | Values Added |
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| Description | Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to limit the size of the request body on the start meeting API endpoint, which allows an authenticated attacker to cause resource exhaustion or denial of service via a crafted oversized HTTP POST request to {{/api/v1/meetings}}.. Mattermost Advisory ID: MMSA-2026-00608 | |
| Title | Improper Input Validation in MS Teams Meetings API Handler | |
| Weaknesses | CWE-770 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: Mattermost
Published:
Updated: 2026-05-18T14:35:38.548Z
Reserved: 2026-02-11T00:04:25.542Z
Link: CVE-2026-2325
Updated: 2026-05-18T14:35:34.131Z
Status : Analyzed
Published: 2026-05-18T08:16:13.757
Modified: 2026-05-18T19:17:11.097
Link: CVE-2026-2325
No data.
OpenCVE Enrichment
Updated: 2026-05-18T09:30:22Z