The Content Security Policy (CSP) implementation in Messages in Apple OS X before 10.11.4 allows remote attackers to obtain sensitive information via a javascript: URL.
Severity
CVSS 3.0
4.3 medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
EPSS
2.6% chance of exploitation in the next 30 days; higher than 85% of CVEs (scores of 2026-10-31)