Critical (9.8) in incsub hummingbird. EPSS 1.1% chance of exploitation in the next 30 days.
The Hummingbird WordPress plugin before 3.4.2 does not validate the generated file path for page cache files before writing them, leading to a path traversal vulnerability in the page cache module.
Severity
CVSS 3.1
9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
1.1% chance of exploitation in the next 30 days; higher than 66% of CVEs (scores of 2026-10-31)