CVE-2023-1478: Incsub Hummingbird

Critical severity, CVSS 9.8. 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.

Affected products

• Incsub Hummingbird: before 3.4.2 (fixed in 3.4.2)

Published 2023-04-10. Last modified 2026-06-17.