CVE-2026-54728: Bunkerity Bunkerweb

Medium severity, CVSS 6.1. EPSS: 0.4% chance of exploitation in the next 30 days.

bunkerweb is an Open-source and next-generation Web Application Firewall (WAF). Prior to BunkerWeb 1.6.12 and BunkerWeb PRO 0.57, authenticated Host header handling in the BunkerWeb UI and API improperly validated and neutralized user-controlled input in a configuration-dependent path, allowing a low-privileged authenticated user to escalate privileges and affect confidentiality, integrity, and availability of the BunkerWeb instance. This issue is fixed in BunkerWeb version 1.6.12 and BunkerWeb PRO version 0.57.

Affected products

• Bunkerity Bunkerweb: before 1.6.12 (fixed in 1.6.12)

Published 2026-07-16. Last modified 2026-07-17.