CVE-2021-45468

CRITICAL

Imperva Web Application Firewall < 2021-12-23 - HTTP Request Smuggling

Title source: rule

Description

Imperva Web Application Firewall (WAF) before 2021-12-23 allows remote unauthenticated attackers to use "Content-Encoding: gzip" to evade WAF security controls and send malicious HTTP POST requests to web servers behind the WAF.

Exploits (1)

nomisec WORKING POC 5 stars
by 0xhaggis · poc
https://github.com/0xhaggis/Imperva_gzip_bypass

References (1)

Scores

CVSS v3 9.8
EPSS 0.3328
EPSS Percentile 96.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-444
Status published
Products (1)
imperva/web_application_firewall < 2021-12-23
Published Jan 14, 2022
Tracked Since Feb 18, 2026