Sublime Text 3 Build 3126 allows user-assisted attackers to cause a denial of service or possibly have unspecified other impact via a crafted .mkv file. One threat model is a victim who obtains an untrusted crafted file from a remote location and issues several user-defined commands, as demonstrated by Ctrl-A, Delete, and Ctrl-Z.
Severity
CVSS 3.0
7.8 high
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
0.9% chance of exploitation in the next 30 days; higher than 60% of CVEs (scores of 2026-10-31)