Mattermost Desktop App versions <=6.2 5.5.13 6.0.2.0 fail to properly null check when checking for headers in the Mattermost Desktop App which allows any user to crash another channel members Desktop App via posting a malicious link with an embedded image that misses one of those headers. Mattermost Advisory ID: MMSA-2026-00668
Metrics
Affected Vendors & Products
References
| Link | Providers |
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| https://mattermost.com/security-updates |
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History
Fri, 17 Jul 2026 13:30:00 +0000
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ssvc
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Fri, 17 Jul 2026 11:45:00 +0000
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| First Time appeared |
Mattermost
Mattermost mattermost |
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| Vendors & Products |
Mattermost
Mattermost mattermost |
Fri, 17 Jul 2026 10:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Mattermost Desktop App versions <=6.2 5.5.13 6.0.2.0 fail to properly null check when checking for headers in the Mattermost Desktop App which allows any user to crash another channel members Desktop App via posting a malicious link with an embedded image that misses one of those headers. Mattermost Advisory ID: MMSA-2026-00668 | |
| Title | Posting a malicious markdown image crashes the Mattermost Desktop App | |
| Weaknesses | CWE-754 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: Mattermost
Published:
Updated: 2026-07-17T12:53:59.567Z
Reserved: 2026-05-07T10:57:31.807Z
Link: CVE-2026-8075
Updated: 2026-07-17T12:53:56.283Z
No data.
No data.
OpenCVE Enrichment
Updated: 2026-07-17T11:30:05Z