VULNERABILITY INTELLIGENCE

CVE-2021-45468

CVSS score9.8 CRITICAL
EPSS probability3.99%
CISA KEVNot currently listed
Published2022-01-14
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • nvd@nist.gov: CWE-444

Primary references