unicode loads unicode data downloaded from unicode.org into nodejs. Unicode before 9.0.0 downloads binary resources over HTTP, which leaves it vulnerable to MITM attacks.
Severity
CVSS 3.0
8.1 high
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
0.6% chance of exploitation in the next 30 days; higher than 47% of CVEs (scores of 2026-10-31)