High (8.1). EPSS 78% chance of exploitation in the next 30 days.
Buffer overflow in Squid 3.x before 3.5.17 and 4.x before 4.0.9 allows remote attackers to execute arbitrary code via crafted Edge Side Includes (ESI) responses.
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
78% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-31)