Mattermost Desktop App versions <=6.1 5.5.13.0 fail to account for attempting to open extremely long URLs in the Mattermost Desktop App which allows a malicious server owner to crash the application via including a script to call window.open on a very large URL. Mattermost Advisory ID: MMSA-2026-00652
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://mattermost.com/security-updates |
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History
Tue, 16 Jun 2026 08:15:00 +0000
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| First Time appeared |
Mattermost
Mattermost mattermost |
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| Vendors & Products |
Mattermost
Mattermost mattermost |
Mon, 15 Jun 2026 16:30:00 +0000
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| Metrics |
ssvc
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Mon, 15 Jun 2026 16:00:00 +0000
| Type | Values Removed | Values Added |
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| Description | Mattermost Desktop App versions <=6.1 5.5.13.0 fail to account for attempting to open extremely long URLs in the Mattermost Desktop App which allows a malicious server owner to crash the application via including a script to call window.open on a very large URL. Mattermost Advisory ID: MMSA-2026-00652 | |
| Title | Overly long URLs crash the Mattermost Desktop App | |
| Weaknesses | CWE-770 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: Mattermost
Published:
Updated: 2026-06-15T16:06:03.652Z
Reserved: 2026-05-15T14:13:41.661Z
Link: CVE-2026-8683
Updated: 2026-06-15T16:05:35.592Z
Status : Undergoing Analysis
Published: 2026-06-15T16:16:34.700
Modified: 2026-06-15T20:56:44.703
Link: CVE-2026-8683
No data.
OpenCVE Enrichment
Updated: 2026-06-16T08:00:03Z