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
CVSS 6.5EPSS 0.199%Risk 0.66
View source- Published
- 2026-06-15 16:16:34
- Affected versions
- cannotmatch
- Type
- Docker image
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H