CVE-2026-8683 — Overly long URLs crash the Mattermost Desktop App
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 …
Published: 2026-06-15 · CVSS: 6.5 · CVSS 3.1
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
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7